617255492490 has 96 divisors (see below), whose sum is σ = 1975217602176. Its totient is φ = 130234124160.

The previous prime is 617255492471. The next prime is 617255492509. The reversal of 617255492490 is 94294552716.

It is a happy number.

617255492490 is a `hidden beast` number, since 6 + 1 + 7 + 2 + 5 + 549 + 2 + 4 + 90 = 666.

It is an interprime number because it is at equal distance from previous prime (617255492471) and next prime (617255492509).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37675296 + ... + 37691675.

It is an arithmetic number, because the mean of its divisors is an integer number (20575183356).

Almost surely, 2^617255492490 is an apocalyptic number.

617255492490 is an abundant number, since it is smaller than the sum of its proper divisors (1357962109686).

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

617255492490 is a wasteful number, since it uses less digits than its factorization.

617255492490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75367004 (or 75367001 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 617255492490 in words is "six hundred seventeen billion, two hundred fifty-five million, four hundred ninety-two thousand, four hundred ninety".