65538473274 has 40 divisors (see below), whose sum is σ = 153239724000. Its totient is φ = 20896323624.

The previous prime is 65538473123. The next prime is 65538473303. The reversal of 65538473274 is 47237483556.

It is a happy number.

65538473274 is a `hidden beast` number, since 6 + 5 + 538 + 4 + 7 + 32 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 65538473274.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8791024 + ... + 8798475.

It is an arithmetic number, because the mean of its divisors is an integer number (3830993100).

Almost surely, 2^65538473274 is an apocalyptic number.

65538473274 is an abundant number, since it is smaller than the sum of its proper divisors (87701250726).

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

65538473274 is a wasteful number, since it uses less digits than its factorization.

65538473274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17589536 (or 17589527 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 54.

The spelling of 65538473274 in words is "sixty-five billion, five hundred thirty-eight million, four hundred seventy-three thousand, two hundred seventy-four".