64144872630 has 48 divisors (see below), whose sum is σ = 168306755760. Its totient is φ = 16948367424.

The previous prime is 64144872607. The next prime is 64144872641. The reversal of 64144872630 is 3627844146.

64144872630 is a `hidden beast` number, since 6 + 4 + 1 + 4 + 4 + 8 + 7 + 2 + 630 = 666.

It is a super-2 number, since 2×64144872630² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3259552 + ... + 3279171.

It is an arithmetic number, because the mean of its divisors is an integer number (3506390745).

Almost surely, 2^64144872630 is an apocalyptic number.

64144872630 is an abundant number, since it is smaller than the sum of its proper divisors (104161883130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64144872630 is a wasteful number, since it uses less digits than its factorization.

64144872630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538845 (or 6538842 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 64144872630 in words is "sixty-four billion, one hundred forty-four million, eight hundred seventy-two thousand, six hundred thirty".