671657757077 has 8 divisors (see below), whose sum is σ = 710976937440. Its totient is φ = 633415814640.

The previous prime is 671657757037. The next prime is 671657757101. The reversal of 671657757077 is 770757756176.

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 671657757077 - 2²⁶ = 671590648213 is a prime.

It is a super-2 number, since 2×671657757077² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671657757037) 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, 269308199 + ... + 269310692.

It is an arithmetic number, because the mean of its divisors is an integer number (88872117180).

Almost surely, 2^671657757077 is an apocalyptic number.

It is an amenable number.

671657757077 is a deficient number, since it is larger than the sum of its proper divisors (39319180363).

671657757077 is a wasteful number, since it uses less digits than its factorization.

671657757077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538618963.

The product of its (nonzero) digits is 105884100, while the sum is 65.

Subtracting 671657757077 from its reverse (770757756176), we obtain a palindrome (99099999099).

The spelling of 671657757077 in words is "six hundred seventy-one billion, six hundred fifty-seven million, seven hundred fifty-seven thousand, seventy-seven".