66105630621024 has 96 divisors (see below), whose sum is σ = 190602047220480. Its totient is φ = 19967833492992.

The previous prime is 66105630621013. The next prime is 66105630621071. The reversal of 66105630621024 is 42012603650166.

It is a tau number, because it is divible by the number of its divisors (96).

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, 787830267 + ... + 787914170.

It is an arithmetic number, because the mean of its divisors is an integer number (1985437991880).

Almost surely, 2^{66105630621024} is an apocalyptic number.

It is an amenable number.

66105630621024 is an abundant number, since it is smaller than the sum of its proper divisors (124496416599456).

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

66105630621024 is a wasteful number, since it uses less digits than its factorization.

66105630621024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575744492 (or 1575744484 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 66105630621024 in words is "sixty-six trillion, one hundred five billion, six hundred thirty million, six hundred twenty-one thousand, twenty-four".