961952491128 has 64 divisors (see below), whose sum is σ = 2427776040960. Its totient is φ = 317606438016.

The previous prime is 961952491117. The next prime is 961952491147. The reversal of 961952491128 is 821194259169.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1611001 + ... + 2125847.

It is an arithmetic number, because the mean of its divisors is an integer number (37934000640).

Almost surely, 2^961952491128 is an apocalyptic number.

It is an amenable number.

961952491128 is an abundant number, since it is smaller than the sum of its proper divisors (1465823549832).

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

961952491128 is a wasteful number, since it uses less digits than its factorization.

961952491128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515596 (or 515592 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 57.

The spelling of 961952491128 in words is "nine hundred sixty-one billion, nine hundred fifty-two million, four hundred ninety-one thousand, one hundred twenty-eight".