691553457072096 has 96 divisors (see below), whose sum is σ = 1922155453764000. Its totient is φ = 216953021546496.

The previous prime is 691553457072041. The next prime is 691553457072131. The reversal of 691553457072096 is 690270754355196.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 691553457072096.

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, 67426170 + ... + 77002566.

It is an arithmetic number, because the mean of its divisors is an integer number (20022452643375).

Almost surely, 2^{691553457072096} is an apocalyptic number.

It is an amenable number.

691553457072096 is an abundant number, since it is smaller than the sum of its proper divisors (1230601996691904).

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

691553457072096 is a wasteful number, since it uses less digits than its factorization.

691553457072096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9620676 (or 9620668 counting only the distinct ones).

The product of its (nonzero) digits is 428652000, while the sum is 69.

The spelling of 691553457072096 in words is "six hundred ninety-one trillion, five hundred fifty-three billion, four hundred fifty-seven million, seventy-two thousand, ninety-six".