66708040125072 has 80 divisors (see below), whose sum is σ = 173117837249280. Its totient is φ = 22134319872000.

The previous prime is 66708040125061. The next prime is 66708040125127. The reversal of 66708040125072 is 27052104080766.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 25969954 + ... + 28422782.

It is an arithmetic number, because the mean of its divisors is an integer number (2163972965616).

Almost surely, 2^{66708040125072} is an apocalyptic number.

It is an amenable number.

66708040125072 is an abundant number, since it is smaller than the sum of its proper divisors (106409797124208).

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

66708040125072 is a wasteful number, since it uses less digits than its factorization.

66708040125072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455432 (or 2455426 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 66708040125072 in words is "sixty-six trillion, seven hundred eight billion, forty million, one hundred twenty-five thousand, seventy-two".