42797220184656 has 240 divisors, whose sum is σ = 143716770288000. Its totient is φ = 11629918282752.

The previous prime is 42797220184639. The next prime is 42797220184687. The reversal of 42797220184656 is 65648102279724.

42797220184656 is a `hidden beast` number, since 4 + 2 + 79 + 72 + 20 + 18 + 465 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 42797220184593 and 42797220184602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8967231 + ... + 12884318.

It is an arithmetic number, because the mean of its divisors is an integer number (598819876200).

Almost surely, 2^{42797220184656} is an apocalyptic number.

It is an amenable number.

42797220184656 is an abundant number, since it is smaller than the sum of its proper divisors (100919550103344).

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

42797220184656 is a wasteful number, since it uses less digits than its factorization.

42797220184656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21851666 (or 21851657 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 63.

The spelling of 42797220184656 in words is "forty-two trillion, seven hundred ninety-seven billion, two hundred twenty million, one hundred eighty-four thousand, six hundred fifty-six".