657441256754164 has 12 divisors (see below), whose sum is σ = 1150612813112644. Its totient is φ = 328694738721984.

The previous prime is 657441256754159. The next prime is 657441256754203. The reversal of 657441256754164 is 461457652144756.

It can be written as a sum of positive squares in 2 ways, for example, as 466885871281764 + 190555385472400 = 21607542^2 + 13804180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 657441256754164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6472356639 + ... + 6472458214.

Almost surely, 2^{657441256754164} is an apocalyptic number.

It is an amenable number.

657441256754164 is a deficient number, since it is larger than the sum of its proper divisors (493171556358480).

657441256754164 is a wasteful number, since it uses less digits than its factorization.

657441256754164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944827554 (or 12944827552 counting only the distinct ones).

The product of its digits is 677376000, while the sum is 67.

The spelling of 657441256754164 in words is "six hundred fifty-seven trillion, four hundred forty-one billion, two hundred fifty-six million, seven hundred fifty-four thousand, one hundred sixty-four".