61110972144 has 60 divisors (see below), whose sum is σ = 171042510912. Its totient is φ = 20368339200.

The previous prime is 61110972133. The next prime is 61110972149. The reversal of 61110972144 is 44127901116.

61110972144 is a `hidden beast` number, since 611 + 10 + 9 + 7 + 21 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 61110972099 and 61110972108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110972149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2711964 + ... + 2734404.

Almost surely, 2^61110972144 is an apocalyptic number.

It is an amenable number.

61110972144 is an abundant number, since it is smaller than the sum of its proper divisors (109931538768).

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

61110972144 is a wasteful number, since it uses less digits than its factorization.

61110972144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41366 (or 41357 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

It can be divided in two parts, 61110972 and 144, that added together give a palindrome (61111116).

The spelling of 61110972144 in words is "sixty-one billion, one hundred ten million, nine hundred seventy-two thousand, one hundred forty-four".