61907800500 has 1152 divisors, whose sum is σ = 262679639040. Its totient is φ = 12454041600.

The previous prime is 61907800481. The next prime is 61907800501. The reversal of 61907800500 is 500870916.

61907800500 is a `hidden beast` number, since 61 + 90 + 7 + 8 + 0 + 0 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61907800501) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 197788344 + ... + 197788656.

It is an arithmetic number, because the mean of its divisors is an integer number (228020520).

Almost surely, 2^61907800500 is an apocalyptic number.

61907800500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61907800500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131339819520).

61907800500 is an abundant number, since it is smaller than the sum of its proper divisors (200771838540).

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

61907800500 is a wasteful number, since it uses less digits than its factorization.

61907800500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 61907800500 in words is "sixty-one billion, nine hundred seven million, eight hundred thousand, five hundred".