61413810772 has 12 divisors (see below), whose sum is σ = 107485167636. Its totient is φ = 30703762880.

The previous prime is 61413810737. The next prime is 61413810781. The reversal of 61413810772 is 27701831416.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24132379716 + 37281431056 = 155346^2 + 193084^2 .

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, 741379 + ... + 820042.

It is an arithmetic number, because the mean of its divisors is an integer number (8957097303).

Almost surely, 2^61413810772 is an apocalyptic number.

It is an amenable number.

61413810772 is a deficient number, since it is larger than the sum of its proper divisors (46071356864).

61413810772 is a wasteful number, since it uses less digits than its factorization.

61413810772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571258 (or 1571256 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 61413810772 in words is "sixty-one billion, four hundred thirteen million, eight hundred ten thousand, seven hundred seventy-two".