64212666111660 has 192 divisors, whose sum is σ = 196316551839744. Its totient is φ = 15552742060800.

The previous prime is 64212666111637. The next prime is 64212666111683. The reversal of 64212666111660 is 6611166621246.

It is an interprime number because it is at equal distance from previous prime (64212666111637) and next prime (64212666111683).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3844370869 + ... + 3844387571.

It is an arithmetic number, because the mean of its divisors is an integer number (1022482040832).

Almost surely, 2^{64212666111660} is an apocalyptic number.

64212666111660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64212666111660 is an abundant number, since it is smaller than the sum of its proper divisors (132103885728084).

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

64212666111660 is a wasteful number, since it uses less digits than its factorization.

64212666111660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21604 (or 21602 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 64212666111660 in words is "sixty-four trillion, two hundred twelve billion, six hundred sixty-six million, one hundred eleven thousand, six hundred sixty".