64757325905 has 32 divisors (see below), whose sum is σ = 83949022080. Its totient is φ = 47774776320.

The previous prime is 64757325901. The next prime is 64757325911. The reversal of 64757325905 is 50952375746.

It is a happy number.

It is not a de Polignac number, because 64757325905 - 2² = 64757325901 is a prime.

It is a super-2 number, since 2×64757325905² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64757325901) 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 31 ways as a sum of consecutive naturals, for example, 1518575 + ... + 1560635.

It is an arithmetic number, because the mean of its divisors is an integer number (2623406940).

Almost surely, 2^64757325905 is an apocalyptic number.

It is an amenable number.

64757325905 is a deficient number, since it is larger than the sum of its proper divisors (19191696175).

64757325905 is a wasteful number, since it uses less digits than its factorization.

64757325905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42449.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 64757325905 in words is "sixty-four billion, seven hundred fifty-seven million, three hundred twenty-five thousand, nine hundred five".