1617656340042 has 48 divisors (see below), whose sum is σ = 3625832770560. Its totient is φ = 520692602400.

The previous prime is 1617656340031. The next prime is 1617656340059. The reversal of 1617656340042 is 2400436567161.

1617656340042 is a `hidden beast` number, since 1 + 6 + 1 + 7 + 6 + 5 + 634 + 0 + 0 + 4 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1617656340042.

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, 2887042 + ... + 3401517.

It is an arithmetic number, because the mean of its divisors is an integer number (75538182720).

Almost surely, 2^{1617656340042} is an apocalyptic number.

1617656340042 is an abundant number, since it is smaller than the sum of its proper divisors (2008176430518).

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

1617656340042 is a wasteful number, since it uses less digits than its factorization.

1617656340042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289059 (or 6289056 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 1617656340042 in words is "one trillion, six hundred seventeen billion, six hundred fifty-six million, three hundred forty thousand, forty-two".