42646525556 has 12 divisors (see below), whose sum is σ = 74667160260. Its totient is φ = 21313051200.

The previous prime is 42646525547. The next prime is 42646525583. The reversal of 42646525556 is 65552564624.

It can be written as a sum of positive squares in 2 ways, for example, as 35143501156 + 7503024400 = 187466^2 + 86620^2 .

It is a super-2 number, since 2×42646525556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2543495 + ... + 2560206.

It is an arithmetic number, because the mean of its divisors is an integer number (6222263355).

Almost surely, 2^42646525556 is an apocalyptic number.

It is an amenable number.

42646525556 is a deficient number, since it is larger than the sum of its proper divisors (32020634704).

42646525556 is a wasteful number, since it uses less digits than its factorization.

42646525556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105794 (or 5105792 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 50.

The spelling of 42646525556 in words is "forty-two billion, six hundred forty-six million, five hundred twenty-five thousand, five hundred fifty-six".