61412536644 has 12 divisors (see below), whose sum is σ = 143295918864. Its totient is φ = 20470845544.

The previous prime is 61412536631. The next prime is 61412536657. The reversal of 61412536644 is 44663521416.

It is an interprime number because it is at equal distance from previous prime (61412536631) and next prime (61412536657).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 61412536596 and 61412536605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558855682 + ... + 2558855705.

It is an arithmetic number, because the mean of its divisors is an integer number (11941326572).

Almost surely, 2^61412536644 is an apocalyptic number.

It is an amenable number.

61412536644 is an abundant number, since it is smaller than the sum of its proper divisors (81883382220).

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

61412536644 is a wasteful number, since it uses less digits than its factorization.

61412536644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117711394 (or 5117711392 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The spelling of 61412536644 in words is "sixty-one billion, four hundred twelve million, five hundred thirty-six thousand, six hundred forty-four".