521010991096 has 8 divisors (see below), whose sum is σ = 976895608320. Its totient is φ = 260505495544.

The previous prime is 521010991091. The next prime is 521010991153. The reversal of 521010991096 is 690199010125.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521010991091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32563186936 + ... + 32563186951.

It is an arithmetic number, because the mean of its divisors is an integer number (122111951040).

Almost surely, 2^521010991096 is an apocalyptic number.

It is an amenable number.

521010991096 is a deficient number, since it is larger than the sum of its proper divisors (455884617224).

521010991096 is a wasteful number, since it uses less digits than its factorization.

521010991096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65126373893 (or 65126373889 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 43.

The spelling of 521010991096 in words is "five hundred twenty-one billion, ten million, nine hundred ninety-one thousand, ninety-six".