671155501263597 has 32 divisors (see below), whose sum is σ = 1144523103718400. Its totient is φ = 380758311082224.

The previous prime is 671155501263553. The next prime is 671155501263613. The reversal of 671155501263597 is 795362105551176.

It is a happy number.

671155501263597 is a `hidden beast` number, since 6 + 7 + 1 + 1 + 5 + 5 + 501 + 2 + 6 + 35 + 97 = 666.

It is not a de Polignac number, because 671155501263597 - 2²⁷ = 671155367045869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671155521263597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12773669083 + ... + 12773721624.

It is an arithmetic number, because the mean of its divisors is an integer number (35766346991200).

Almost surely, 2^{671155501263597} is an apocalyptic number.

It is an amenable number.

671155501263597 is a deficient number, since it is larger than the sum of its proper divisors (473367602454803).

671155501263597 is a wasteful number, since it uses less digits than its factorization.

671155501263597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25547390862 (or 25547390856 counting only the distinct ones).

The product of its (nonzero) digits is 59535000, while the sum is 63.

The spelling of 671155501263597 in words is "six hundred seventy-one trillion, one hundred fifty-five billion, five hundred one million, two hundred sixty-three thousand, five hundred ninety-seven".