961131136426 has 8 divisors (see below), whose sum is σ = 1444195314180. Its totient is φ = 479732698368.

The previous prime is 961131136421. The next prime is 961131136429. The reversal of 961131136426 is 624631131169.

It can be written as a sum of positive squares in 2 ways, for example, as 919556334225 + 41574802201 = 958935^2 + 203899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×961131136426² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (961131136421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416433481 + ... + 416435788.

Almost surely, 2^961131136426 is an apocalyptic number.

961131136426 is a deficient number, since it is larger than the sum of its proper divisors (483064177754).

961131136426 is a wasteful number, since it uses less digits than its factorization.

961131136426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832869848.

The product of its digits is 139968, while the sum is 43.

The spelling of 961131136426 in words is "nine hundred sixty-one billion, one hundred thirty-one million, one hundred thirty-six thousand, four hundred twenty-six".