61684260732 has 18 divisors (see below), whose sum is σ = 155924103608. Its totient is φ = 20561420232.

The previous prime is 61684260727. The next prime is 61684260749. The reversal of 61684260732 is 23706248616.

61684260732 is a `hidden beast` number, since 6 + 1 + 6 + 8 + 4 + 2 + 607 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 856725808 + ... + 856725879.

Almost surely, 2^61684260732 is an apocalyptic number.

It is an amenable number.

61684260732 is an abundant number, since it is smaller than the sum of its proper divisors (94239842876).

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

61684260732 is a wasteful number, since it uses less digits than its factorization.

61684260732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713451697 (or 1713451692 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 61684260732 in words is "sixty-one billion, six hundred eighty-four million, two hundred sixty thousand, seven hundred thirty-two".