66574662001456 has 40 divisors (see below), whose sum is σ = 155174024218880. Its totient is φ = 27030313894464.

The previous prime is 66574662001447. The next prime is 66574662001459. The reversal of 66574662001456 is 65410026647566.

It is a super-2 number, since 2×66574662001456² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66574662001456.

It is not an unprimeable number, because it can be changed into a prime (66574662001459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15642540636 + ... + 15642544891.

It is an arithmetic number, because the mean of its divisors is an integer number (3879350605472).

Almost surely, 2^{66574662001456} is an apocalyptic number.

It is an amenable number.

66574662001456 is an abundant number, since it is smaller than the sum of its proper divisors (88599362217424).

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

66574662001456 is a wasteful number, since it uses less digits than its factorization.

66574662001456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31285085561 (or 31285085555 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 58.

The spelling of 66574662001456 in words is "sixty-six trillion, five hundred seventy-four billion, six hundred sixty-two million, one thousand, four hundred fifty-six".