64660020426046 has 32 divisors (see below), whose sum is σ = 99530247398400. Its totient is φ = 31493362965120.

The previous prime is 64660020426037. The next prime is 64660020426061. The reversal of 64660020426046 is 64062402006646.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64660020425987 and 64660020426005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56220211 + ... + 57358801.

It is an arithmetic number, because the mean of its divisors is an integer number (3110320231200).

Almost surely, 2^{64660020426046} is an apocalyptic number.

64660020426046 is a deficient number, since it is larger than the sum of its proper divisors (34870226972354).

64660020426046 is a wasteful number, since it uses less digits than its factorization.

64660020426046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143024.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 64660020426046 in words is "sixty-four trillion, six hundred sixty billion, twenty million, four hundred twenty-six thousand, forty-six".