64465299256446 has 96 divisors (see below), whose sum is σ = 157608117328896. Its totient is φ = 18866276352000.

The previous prime is 64465299256429. The next prime is 64465299256471.

64465299256446 is a `hidden beast` number, since 6 + 4 + 4 + 6 + 52 + 9 + 9 + 2 + 564 + 4 + 6 = 666.

64465299256446 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7681411 + ... + 13708926.

It is an arithmetic number, because the mean of its divisors is an integer number (1641751222176).

Almost surely, 2^{64465299256446} is an apocalyptic number.

64465299256446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64465299256446 is an abundant number, since it is smaller than the sum of its proper divisors (93142818072450).

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

64465299256446 is a wasteful number, since it uses less digits than its factorization.

64465299256446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21390878 (or 21390875 counting only the distinct ones).

The product of its digits is 2687385600, while the sum is 72.

The spelling of 64465299256446 in words is "sixty-four trillion, four hundred sixty-five billion, two hundred ninety-nine million, two hundred fifty-six thousand, four hundred forty-six".