654135605077842 has 48 divisors (see below), whose sum is σ = 1466641579703040. Its totient is φ = 210458114901216.

The previous prime is 654135605077819. The next prime is 654135605077949. The reversal of 654135605077842 is 248770506531456.

654135605077842 is a `hidden beast` number, since 6 + 5 + 4 + 1 + 3 + 56 + 0 + 507 + 78 + 4 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 654135605077842.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201623458 + ... + 204842109.

It is an arithmetic number, because the mean of its divisors is an integer number (30555032910480).

Almost surely, 2^{654135605077842} is an apocalyptic number.

654135605077842 is an abundant number, since it is smaller than the sum of its proper divisors (812505974625198).

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

654135605077842 is a wasteful number, since it uses less digits than its factorization.

654135605077842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406468687 (or 406468684 counting only the distinct ones).

The product of its (nonzero) digits is 169344000, while the sum is 63.

The spelling of 654135605077842 in words is "six hundred fifty-four trillion, one hundred thirty-five billion, six hundred five million, seventy-seven thousand, eight hundred forty-two".