220761634405842 has 64 divisors (see below), whose sum is σ = 502830703791360. Its totient is φ = 71766445375872.

The previous prime is 220761634405759. The next prime is 220761634405853. The reversal of 220761634405842 is 248504436167022.

It is a happy number.

220761634405842 is a `hidden beast` number, since 2 + 2 + 0 + 7 + 6 + 16 + 3 + 4 + 40 + 584 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230466483 + ... + 231422390.

It is an arithmetic number, because the mean of its divisors is an integer number (7856729746740).

Almost surely, 2^{220761634405842} is an apocalyptic number.

220761634405842 is an abundant number, since it is smaller than the sum of its proper divisors (282069069385518).

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

220761634405842 is a wasteful number, since it uses less digits than its factorization.

220761634405842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461889104 (or 461889098 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 54.

The spelling of 220761634405842 in words is "two hundred twenty trillion, seven hundred sixty-one billion, six hundred thirty-four million, four hundred five thousand, eight hundred forty-two".