961265769381 has 32 divisors (see below), whose sum is σ = 1453870454400. Its totient is φ = 627530526720.

The previous prime is 961265769379. The next prime is 961265769397. The reversal of 961265769381 is 183967562169.

961265769381 is a `hidden beast` number, since 9 + 6 + 1 + 26 + 576 + 9 + 38 + 1 = 666.

It is not a de Polignac number, because 961265769381 - 2¹ = 961265769379 is a prime.

It is a super-2 number, since 2×961265769381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961265769361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 764590 + ... + 1583391.

It is an arithmetic number, because the mean of its divisors is an integer number (45433451700).

Almost surely, 2^961265769381 is an apocalyptic number.

It is an amenable number.

961265769381 is a deficient number, since it is larger than the sum of its proper divisors (492604685019).

961265769381 is a wasteful number, since it uses less digits than its factorization.

961265769381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348306 (or 2348300 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 961265769381 in words is "nine hundred sixty-one billion, two hundred sixty-five million, seven hundred sixty-nine thousand, three hundred eighty-one".