61772265020490 has 32 divisors (see below), whose sum is σ = 149385141677376. Its totient is φ = 16346858935680.

The previous prime is 61772265020489. The next prime is 61772265020513. The reversal of 61772265020490 is 9402056227716.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7859062867 + ... + 7859070726.

It is an arithmetic number, because the mean of its divisors is an integer number (4668285677418).

Almost surely, 2^{61772265020490} is an apocalyptic number.

61772265020490 is an abundant number, since it is smaller than the sum of its proper divisors (87612876656886).

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

61772265020490 is a wasteful number, since it uses less digits than its factorization.

61772265020490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15718133734.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 61772265020490 in words is "sixty-one trillion, seven hundred seventy-two billion, two hundred sixty-five million, twenty thousand, four hundred ninety".