64750556311 has 4 divisors (see below), whose sum is σ = 74000635792. Its totient is φ = 55500476832.

The previous prime is 64750556291. The next prime is 64750556327. The reversal of 64750556311 is 11365505746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64750556311 - 2¹³ = 64750548119 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 (64750556341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625039730 + ... + 4625039743.

It is an arithmetic number, because the mean of its divisors is an integer number (18500158948).

Almost surely, 2^64750556311 is an apocalyptic number.

64750556311 is a deficient number, since it is larger than the sum of its proper divisors (9250079481).

64750556311 is an equidigital number, since it uses as much as digits as its factorization.

64750556311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250079480.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 64750556311 in words is "sixty-four billion, seven hundred fifty million, five hundred fifty-six thousand, three hundred eleven".