64559825902 has 16 divisors (see below), whose sum is σ = 113769763632. Its totient is φ = 27088038720.

The previous prime is 64559825893. The next prime is 64559825903. The reversal of 64559825902 is 20952895546.

It is a super-2 number, since 2×64559825902² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64559825903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112866543 + ... + 112867114.

It is an arithmetic number, because the mean of its divisors is an integer number (7110610227).

Almost surely, 2^64559825902 is an apocalyptic number.

64559825902 is a deficient number, since it is larger than the sum of its proper divisors (49209937730).

64559825902 is a wasteful number, since it uses less digits than its factorization.

64559825902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225733683.

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 64559825902 in words is "sixty-four billion, five hundred fifty-nine million, eight hundred twenty-five thousand, nine hundred two".