67620505714464 has 48 divisors (see below), whose sum is σ = 177504844335840. Its totient is φ = 22540039449600.

The previous prime is 67620505714381. The next prime is 67620505714477. The reversal of 67620505714464 is 46441750502676.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15627592 + ... + 19479800.

It is an arithmetic number, because the mean of its divisors is an integer number (3698017590330).

Almost surely, 2^{67620505714464} is an apocalyptic number.

It is an amenable number.

67620505714464 is an abundant number, since it is smaller than the sum of its proper divisors (109884338621376).

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

67620505714464 is a wasteful number, since it uses less digits than its factorization.

67620505714464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035073 (or 4035065 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 57.

The spelling of 67620505714464 in words is "sixty-seven trillion, six hundred twenty billion, five hundred five million, seven hundred fourteen thousand, four hundred sixty-four".