64624402462646 has 64 divisors (see below), whose sum is σ = 106798614773760. Its totient is φ = 29146580749440.

The previous prime is 64624402462591. The next prime is 64624402462657. The reversal of 64624402462646 is 64626420442646.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64624402462591 and 64624402462600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2866960136 + ... + 2866982676.

It is an arithmetic number, because the mean of its divisors is an integer number (1668728355840).

Almost surely, 2^{64624402462646} is an apocalyptic number.

64624402462646 is a deficient number, since it is larger than the sum of its proper divisors (42174212311114).

64624402462646 is a wasteful number, since it uses less digits than its factorization.

64624402462646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35709.

The product of its (nonzero) digits is 63700992, while the sum is 56.

The spelling of 64624402462646 in words is "sixty-four trillion, six hundred twenty-four billion, four hundred two million, four hundred sixty-two thousand, six hundred forty-six".