66152815580 has 12 divisors (see below), whose sum is σ = 138920912760. Its totient is φ = 26461126224.

The previous prime is 66152815571. The next prime is 66152815613. The reversal of 66152815580 is 8551825166.

It is a super-2 number, since 2×66152815580² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653820370 + ... + 1653820409.

It is an arithmetic number, because the mean of its divisors is an integer number (11576742730).

Almost surely, 2^66152815580 is an apocalyptic number.

It is an amenable number.

66152815580 is an abundant number, since it is smaller than the sum of its proper divisors (72768097180).

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

66152815580 is a wasteful number, since it uses less digits than its factorization.

66152815580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307640788 (or 3307640786 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 47.

The spelling of 66152815580 in words is "sixty-six billion, one hundred fifty-two million, eight hundred fifteen thousand, five hundred eighty".