521893249248 has 96 divisors (see below), whose sum is σ = 1570619441664. Its totient is φ = 148641910272.

The previous prime is 521893249217. The next prime is 521893249253. The reversal of 521893249248 is 842942398125.

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

It is a super-2 number, since 2×521893249248² (a number of 24 digits) contains 22 as substring.

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, 1011940 + ... + 1437987.

It is an arithmetic number, because the mean of its divisors is an integer number (16360619184).

Almost surely, 2^521893249248 is an apocalyptic number.

It is an amenable number.

521893249248 is an abundant number, since it is smaller than the sum of its proper divisors (1048726192416).

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

521893249248 is a wasteful number, since it uses less digits than its factorization.

521893249248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450264 (or 2450256 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The spelling of 521893249248 in words is "five hundred twenty-one billion, eight hundred ninety-three million, two hundred forty-nine thousand, two hundred forty-eight".