671660825626 has 32 divisors (see below), whose sum is σ = 1188824850432. Its totient is φ = 278507188080.

The previous prime is 671660825621. The next prime is 671660825677. The reversal of 671660825626 is 626528066176.

It is a super-2 number, since 2×671660825626² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671660825621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1812645 + ... + 2151511.

It is an arithmetic number, because the mean of its divisors is an integer number (37150776576).

Almost surely, 2^671660825626 is an apocalyptic number.

671660825626 is a deficient number, since it is larger than the sum of its proper divisors (517164024806).

671660825626 is a wasteful number, since it uses less digits than its factorization.

671660825626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343474.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 671660825626 in words is "six hundred seventy-one billion, six hundred sixty million, eight hundred twenty-five thousand, six hundred twenty-six".