66608621562 has 32 divisors (see below), whose sum is σ = 152256614400. Its totient is φ = 19029992688.

The previous prime is 66608621561. The next prime is 66608621591. The reversal of 66608621562 is 26512680666.

It is a super-3 number, since 3×66608621562³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66608621561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1066639 + ... + 1127357.

It is an arithmetic number, because the mean of its divisors is an integer number (4758019200).

Almost surely, 2^66608621562 is an apocalyptic number.

66608621562 is an abundant number, since it is smaller than the sum of its proper divisors (85647992838).

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

66608621562 is a wasteful number, since it uses less digits than its factorization.

66608621562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86850.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 66608621562 in words is "sixty-six billion, six hundred eight million, six hundred twenty-one thousand, five hundred sixty-two".