61912239700689 has 96 divisors (see below), whose sum is σ = 104950055834624. Its totient is φ = 34433845407360.

The previous prime is 61912239700667. The next prime is 61912239700747. The reversal of 61912239700689 is 98600793221916.

61912239700689 is a `hidden beast` number, since 61 + 9 + 122 + 397 + 0 + 0 + 68 + 9 = 666.

61912239700689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61912239700689 - 2⁷ = 61912239700561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (61912239700589) 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 95 ways as a sum of consecutive naturals, for example, 4102586034 + ... + 4102601124.

Almost surely, 2^{61912239700689} is an apocalyptic number.

It is an amenable number.

61912239700689 is a deficient number, since it is larger than the sum of its proper divisors (43037816133935).

61912239700689 is a wasteful number, since it uses less digits than its factorization.

61912239700689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20387 (or 20384 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 61912239700689 in words is "sixty-one trillion, nine hundred twelve billion, two hundred thirty-nine million, seven hundred thousand, six hundred eighty-nine".