61384416624 has 60 divisors (see below), whose sum is σ = 178153755416. Its totient is φ = 20461470912.

The previous prime is 61384416559. The next prime is 61384416661. The reversal of 61384416624 is 42661448316.

61384416624 is a `hidden beast` number, since 6 + 1 + 3 + 8 + 4 + 4 + 16 + 624 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 61384416624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7890199 + ... + 7897974.

Almost surely, 2^61384416624 is an apocalyptic number.

It is an amenable number.

61384416624 is an abundant number, since it is smaller than the sum of its proper divisors (116769338792).

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

61384416624 is a wasteful number, since it uses less digits than its factorization.

61384416624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15788196 (or 15788178 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 61384416624 in words is "sixty-one billion, three hundred eighty-four million, four hundred sixteen thousand, six hundred twenty-four".