77836387074 has 16 divisors (see below), whose sum is σ = 158984961408. Its totient is φ = 25393431152.

The previous prime is 77836387073. The next prime is 77836387127. The reversal of 77836387074 is 47078363877.

It is a junction number, because it is equal to n+sod(n) for n = 77836386999 and 77836387017.

It is not an unprimeable number, because it can be changed into a prime (77836387073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138007497 + ... + 138008060.

It is an arithmetic number, because the mean of its divisors is an integer number (9936560088).

Almost surely, 2^77836387074 is an apocalyptic number.

77836387074 is an abundant number, since it is smaller than the sum of its proper divisors (81148574334).

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

77836387074 is a wasteful number, since it uses less digits than its factorization.

77836387074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276015609.

The product of its (nonzero) digits is 33191424, while the sum is 60.

The spelling of 77836387074 in words is "seventy-seven billion, eight hundred thirty-six million, three hundred eighty-seven thousand, seventy-four".