65612272880 has 160 divisors (see below), whose sum is σ = 200200757760. Its totient is φ = 19374197760.

The previous prime is 65612272867. The next prime is 65612272883. The reversal of 65612272880 is 8827221656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65612272883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163259 + ... + 397338.

It is an arithmetic number, because the mean of its divisors is an integer number (1251254736).

Almost surely, 2^65612272880 is an apocalyptic number.

It is an amenable number.

65612272880 is an abundant number, since it is smaller than the sum of its proper divisors (134588484880).

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

65612272880 is a wasteful number, since it uses less digits than its factorization.

65612272880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560647 (or 560641 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 65612272880 in words is "sixty-five billion, six hundred twelve million, two hundred seventy-two thousand, eight hundred eighty".