64827349172 has 24 divisors (see below), whose sum is σ = 117623412480. Its totient is φ = 31229873280.

The previous prime is 64827349163. The next prime is 64827349201. The reversal of 64827349172 is 27194372846.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123397 + ... + 1179692.

It is an arithmetic number, because the mean of its divisors is an integer number (4900975520).

Almost surely, 2^64827349172 is an apocalyptic number.

64827349172 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

64827349172 is a deficient number, since it is larger than the sum of its proper divisors (52796063308).

64827349172 is a wasteful number, since it uses less digits than its factorization.

64827349172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303351 (or 2303349 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 53.

The spelling of 64827349172 in words is "sixty-four billion, eight hundred twenty-seven million, three hundred forty-nine thousand, one hundred seventy-two".