61336314639 has 16 divisors (see below), whose sum is σ = 90881593600. Its totient is φ = 40885035768.

The previous prime is 61336314631. The next prime is 61336314659. The reversal of 61336314639 is 93641363316.

61336314639 is a `hidden beast` number, since 6 + 1 + 3 + 3 + 6 + 3 + 1 + 4 + 639 = 666.

It is not a de Polignac number, because 61336314639 - 2³ = 61336314631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61336314594 and 61336314603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61336314631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34632 + ... + 351954.

It is an arithmetic number, because the mean of its divisors is an integer number (5680099600).

Almost surely, 2^61336314639 is an apocalyptic number.

61336314639 is a deficient number, since it is larger than the sum of its proper divisors (29545278961).

61336314639 is a wasteful number, since it uses less digits than its factorization.

61336314639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324491 (or 324485 counting only the distinct ones).

The product of its digits is 629856, while the sum is 45.

The spelling of 61336314639 in words is "sixty-one billion, three hundred thirty-six million, three hundred fourteen thousand, six hundred thirty-nine".