617535145172 has 12 divisors (see below), whose sum is σ = 1178930731776. Its totient is φ = 280697793240.

The previous prime is 617535145163. The next prime is 617535145207. The reversal of 617535145172 is 271541535716.

It is a super-2 number, since 2×617535145172² (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 3 ways as a sum of consecutive naturals, for example, 7017444788 + ... + 7017444875.

It is an arithmetic number, because the mean of its divisors is an integer number (98244227648).

Almost surely, 2^617535145172 is an apocalyptic number.

It is an amenable number.

617535145172 is a deficient number, since it is larger than the sum of its proper divisors (561395586604).

617535145172 is a wasteful number, since it uses less digits than its factorization.

617535145172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034889678 (or 14034889676 counting only the distinct ones).

The product of its digits is 882000, while the sum is 47.

The spelling of 617535145172 in words is "six hundred seventeen billion, five hundred thirty-five million, one hundred forty-five thousand, one hundred seventy-two".