64750556741 has 12 divisors (see below), whose sum is σ = 73804749120. Its totient is φ = 56623965840.

The previous prime is 64750556653. The next prime is 64750556749. The reversal of 64750556741 is 14765505746.

It is a de Polignac number, because none of the positive numbers 2^k-64750556741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64750556741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64750556749) 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 11 ways as a sum of consecutive naturals, for example, 10079405 + ... + 10085826.

It is an arithmetic number, because the mean of its divisors is an integer number (6150395760).

Almost surely, 2^64750556741 is an apocalyptic number.

It is an amenable number.

64750556741 is a deficient number, since it is larger than the sum of its proper divisors (9054192379).

64750556741 is a wasteful number, since it uses less digits than its factorization.

64750556741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20165276 (or 20165263 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 64750556741 in words is "sixty-four billion, seven hundred fifty million, five hundred fifty-six thousand, seven hundred forty-one".