65660900552 has 16 divisors (see below), whose sum is σ = 132584510940. Its totient is φ = 30305030976.

The previous prime is 65660900531. The next prime is 65660900561. The reversal of 65660900552 is 25500906656.

65660900552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 64036326916 + 1624573636 = 253054^2 + 40306^2 .

It is a super-2 number, since 2×65660900552² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 315677303 + ... + 315677510.

Almost surely, 2^65660900552 is an apocalyptic number.

It is an amenable number.

65660900552 is an abundant number, since it is smaller than the sum of its proper divisors (66923610388).

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

65660900552 is a wasteful number, since it uses less digits than its factorization.

65660900552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631354832 (or 631354828 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 65660900552 in words is "sixty-five billion, six hundred sixty million, nine hundred thousand, five hundred fifty-two".