61617605922 has 24 divisors (see below), whose sum is σ = 134242415580. Its totient is φ = 20425724640.

The previous prime is 61617605921. The next prime is 61617605963. The reversal of 61617605922 is 22950671616.

61617605922 is a `hidden beast` number, since 6 + 1 + 6 + 17 + 605 + 9 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61088559921 + 529046001 = 247161^2 + 23001^2 .

It is not an unprimeable number, because it can be changed into a prime (61617605921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9453097 + ... + 9459612.

Almost surely, 2^61617605922 is an apocalyptic number.

61617605922 is an abundant number, since it is smaller than the sum of its proper divisors (72624809658).

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

61617605922 is a wasteful number, since it uses less digits than its factorization.

61617605922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18912898 (or 18912895 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 61617605922 in words is "sixty-one billion, six hundred seventeen million, six hundred five thousand, nine hundred twenty-two".