961992057599 has 4 divisors (see below), whose sum is σ = 961998971064. Its totient is φ = 961985144136.

The previous prime is 961992057583. The next prime is 961992057619. The reversal of 961992057599 is 995750299169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 995750299169 = 1993 ⋅499623833.

It is a cyclic number.

It is not a de Polignac number, because 961992057599 - 2⁴ = 961992057583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961992057799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3243632 + ... + 3527765.

It is an arithmetic number, because the mean of its divisors is an integer number (240499742766).

Almost surely, 2^961992057599 is an apocalyptic number.

961992057599 is a deficient number, since it is larger than the sum of its proper divisors (6913465).

961992057599 is a wasteful number, since it uses less digits than its factorization.

961992057599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913464.

The product of its (nonzero) digits is 124002900, while the sum is 71.

The spelling of 961992057599 in words is "nine hundred sixty-one billion, nine hundred ninety-two million, fifty-seven thousand, five hundred ninety-nine".