664787254351 has 16 divisors (see below), whose sum is σ = 728524591488. Its totient is φ = 601601061600.

The previous prime is 664787254343. The next prime is 664787254361. The reversal of 664787254351 is 153452787466.

664787254351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664787254351 - 2³ = 664787254343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664787254361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21786061 + ... + 21816553.

It is an arithmetic number, because the mean of its divisors is an integer number (45532786968).

Almost surely, 2^664787254351 is an apocalyptic number.

664787254351 is a deficient number, since it is larger than the sum of its proper divisors (63737337137).

664787254351 is a wasteful number, since it uses less digits than its factorization.

664787254351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39462.

The product of its digits is 33868800, while the sum is 58.

The spelling of 664787254351 in words is "six hundred sixty-four billion, seven hundred eighty-seven million, two hundred fifty-four thousand, three hundred fifty-one".