537678664722 has 24 divisors (see below), whose sum is σ = 1168215497280. Its totient is φ = 178726982040.

The previous prime is 537678664703. The next prime is 537678664771. The reversal of 537678664722 is 227466876735.

537678664722 is a `hidden beast` number, since 5 + 37 + 6 + 78 + 66 + 472 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 537678664722.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41596654 + ... + 41609577.

It is an arithmetic number, because the mean of its divisors is an integer number (48675645720).

Almost surely, 2^537678664722 is an apocalyptic number.

537678664722 is an abundant number, since it is smaller than the sum of its proper divisors (630536832558).

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

537678664722 is a wasteful number, since it uses less digits than its factorization.

537678664722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83206598 (or 83206595 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 63.

The spelling of 537678664722 in words is "five hundred thirty-seven billion, six hundred seventy-eight million, six hundred sixty-four thousand, seven hundred twenty-two".