64327387557 has 8 divisors (see below), whose sum is σ = 87175913440. Its totient is φ = 42181893360.

The previous prime is 64327387451. The next prime is 64327387559. The reversal of 64327387557 is 75578372346.

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

It is not a de Polignac number, because 64327387557 - 2²⁴ = 64310610341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64327387497 and 64327387506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64327387559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175757707 + ... + 175758072.

It is an arithmetic number, because the mean of its divisors is an integer number (10896989180).

Almost surely, 2^64327387557 is an apocalyptic number.

It is an amenable number.

64327387557 is a deficient number, since it is larger than the sum of its proper divisors (22848525883).

64327387557 is a wasteful number, since it uses less digits than its factorization.

64327387557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351515843.

The product of its digits is 29635200, while the sum is 57.

The spelling of 64327387557 in words is "sixty-four billion, three hundred twenty-seven million, three hundred eighty-seven thousand, five hundred fifty-seven".