18070881696 has 432 divisors, whose sum is σ = 62648959464. Its totient is φ = 4921233408.

The previous prime is 18070881683. The next prime is 18070881727. The reversal of 18070881696 is 69618807081.

It can be written as a sum of positive squares in 4 ways, for example, as 17414497296 + 656384400 = 131964^2 + 25620^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27673306 + ... + 27673958.

Almost surely, 2^18070881696 is an apocalyptic number.

18070881696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18070881696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31324479732).

18070881696 is an abundant number, since it is smaller than the sum of its proper divisors (44578077768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18070881696 is a wasteful number, since it uses less digits than its factorization.

18070881696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The spelling of 18070881696 in words is "eighteen billion, seventy million, eight hundred eighty-one thousand, six hundred ninety-six".