961994535464 has 32 divisors (see below), whose sum is σ = 1904839917120. Its totient is φ = 454541150976.

The previous prime is 961994535431. The next prime is 961994535497. The reversal of 961994535464 is 464535499169.

It is an interprime number because it is at equal distance from previous prime (961994535431) and next prime (961994535497).

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 961994535464.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31480097 + ... + 31510640.

It is an arithmetic number, because the mean of its divisors is an integer number (59526247410).

Almost surely, 2^961994535464 is an apocalyptic number.

It is an amenable number.

961994535464 is a deficient number, since it is larger than the sum of its proper divisors (942845381656).

961994535464 is a wasteful number, since it uses less digits than its factorization.

961994535464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62990849 (or 62990845 counting only the distinct ones).

The product of its digits is 125971200, while the sum is 65.

The spelling of 961994535464 in words is "nine hundred sixty-one billion, nine hundred ninety-four million, five hundred thirty-five thousand, four hundred sixty-four".