65420737272 has 96 divisors (see below), whose sum is σ = 195202528560. Its totient is φ = 19628160000.

The previous prime is 65420737247. The next prime is 65420737279. The reversal of 65420737272 is 27273702456.

65420737272 is a `hidden beast` number, since 6 + 5 + 4 + 207 + 372 + 72 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65420737279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328929 + ... + 488912.

Almost surely, 2^65420737272 is an apocalyptic number.

It is an amenable number.

65420737272 is an abundant number, since it is smaller than the sum of its proper divisors (129781791288).

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

65420737272 is a wasteful number, since it uses less digits than its factorization.

65420737272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817965 (or 817958 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 45.

The spelling of 65420737272 in words is "sixty-five billion, four hundred twenty million, seven hundred thirty-seven thousand, two hundred seventy-two".