961994535064 has 8 divisors (see below), whose sum is σ = 1803739753260. Its totient is φ = 480997267528.

The previous prime is 961994535043. The next prime is 961994535077. The reversal of 961994535064 is 460535499169.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 961994534993 and 961994535011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60124658434 + ... + 60124658449.

Almost surely, 2^961994535064 is an apocalyptic number.

It is an amenable number.

961994535064 is a deficient number, since it is larger than the sum of its proper divisors (841745218196).

961994535064 is a wasteful number, since it uses less digits than its factorization.

961994535064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120249316889 (or 120249316885 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 61.

The spelling of 961994535064 in words is "nine hundred sixty-one billion, nine hundred ninety-four million, five hundred thirty-five thousand, sixty-four".