671125502655 has 48 divisors (see below), whose sum is σ = 1179034103520. Its totient is φ = 353111076864.

The previous prime is 671125502527. The next prime is 671125502687. The reversal of 671125502655 is 556205521176.

671125502655 is a `hidden beast` number, since 6 + 71 + 1 + 2 + 550 + 26 + 5 + 5 = 666.

It is not a de Polignac number, because 671125502655 - 2⁷ = 671125502527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 671125502655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1120636 + ... + 1611854.

It is an arithmetic number, because the mean of its divisors is an integer number (24563210490).

Almost surely, 2^671125502655 is an apocalyptic number.

671125502655 is a deficient number, since it is larger than the sum of its proper divisors (507908600865).

671125502655 is a wasteful number, since it uses less digits than its factorization.

671125502655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491640 (or 491637 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The spelling of 671125502655 in words is "six hundred seventy-one billion, one hundred twenty-five million, five hundred two thousand, six hundred fifty-five".