64047132757 has 4 divisors (see below), whose sum is σ = 65132677440. Its totient is φ = 62961588076.

The previous prime is 64047132739. The next prime is 64047132761. The reversal of 64047132757 is 75723174046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64047132757 - 2¹⁵ = 64047099989 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 (64047132767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542772253 + ... + 542772370.

It is an arithmetic number, because the mean of its divisors is an integer number (16283169360).

Almost surely, 2^64047132757 is an apocalyptic number.

It is an amenable number.

64047132757 is a deficient number, since it is larger than the sum of its proper divisors (1085544683).

64047132757 is a wasteful number, since it uses less digits than its factorization.

64047132757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085544682.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 64047132757 in words is "sixty-four billion, forty-seven million, one hundred thirty-two thousand, seven hundred fifty-seven".