671157655501763 has 8 divisors (see below), whose sum is σ = 713148604229808. Its totient is φ = 629445716400384.

The previous prime is 671157655501733. The next prime is 671157655501807. The reversal of 671157655501763 is 367105556751176.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671157655501763 - 2⁶ = 671157655501699 is a prime.

It is a super-2 number, since 2×671157655501763² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671157655501763.

It is not an unprimeable number, because it can be changed into a prime (671157655501733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69752401706 + ... + 69752411327.

It is an arithmetic number, because the mean of its divisors is an integer number (89143575528726).

Almost surely, 2^{671157655501763} is an apocalyptic number.

671157655501763 is a deficient number, since it is larger than the sum of its proper divisors (41990948728045).

671157655501763 is a wasteful number, since it uses less digits than its factorization.

671157655501763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139504813333.

The product of its (nonzero) digits is 138915000, while the sum is 65.

The spelling of 671157655501763 in words is "six hundred seventy-one trillion, one hundred fifty-seven billion, six hundred fifty-five million, five hundred one thousand, seven hundred sixty-three".