61624155996 has 96 divisors (see below), whose sum is σ = 172411258880. Its totient is φ = 18922133952.

The previous prime is 61624155991. The next prime is 61624156019. The reversal of 61624155996 is 69955142616.

61624155996 is a `hidden beast` number, since 6 + 1 + 6 + 2 + 41 + 5 + 599 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61624155991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 638685 + ... + 728811.

Almost surely, 2^61624155996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61624155996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86205629440).

61624155996 is an abundant number, since it is smaller than the sum of its proper divisors (110787102884).

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

61624155996 is a wasteful number, since it uses less digits than its factorization.

61624155996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90640 (or 90632 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 61624155996 in words is "sixty-one billion, six hundred twenty-four million, one hundred fifty-five thousand, nine hundred ninety-six".