65217357090 has 64 divisors (see below), whose sum is σ = 174873928320. Its totient is φ = 17295197760.

The previous prime is 65217357053. The next prime is 65217357097. The reversal of 65217357090 is 9075371256.

65217357090 is a `hidden beast` number, since 6 + 5 + 2 + 1 + 73 + 570 + 9 + 0 = 666.

65217357090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65217357097) 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, 618384 + ... + 716123.

It is an arithmetic number, because the mean of its divisors is an integer number (2732405130).

Almost surely, 2^65217357090 is an apocalyptic number.

65217357090 is an abundant number, since it is smaller than the sum of its proper divisors (109656571230).

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

65217357090 is a wasteful number, since it uses less digits than its factorization.

65217357090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334704 (or 1334698 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The spelling of 65217357090 in words is "sixty-five billion, two hundred seventeen million, three hundred fifty-seven thousand, ninety".