671153726705 has 16 divisors (see below), whose sum is σ = 1004115705984. Its totient is φ = 418381543680.

The previous prime is 671153726693. The next prime is 671153726723. The reversal of 671153726705 is 507627351176.

It is not a de Polignac number, because 671153726705 - 2¹² = 671153722609 is a prime.

It is a Duffinian 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, 871627832 + ... + 871628601.

It is an arithmetic number, because the mean of its divisors is an integer number (62757231624).

Almost surely, 2^671153726705 is an apocalyptic number.

It is an amenable number.

671153726705 is a deficient number, since it is larger than the sum of its proper divisors (332961979279).

671153726705 is a wasteful number, since it uses less digits than its factorization.

671153726705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743256456.

The product of its (nonzero) digits is 1852200, while the sum is 50.

The spelling of 671153726705 in words is "six hundred seventy-one billion, one hundred fifty-three million, seven hundred twenty-six thousand, seven hundred five".