61247585408 has 96 divisors (see below), whose sum is σ = 129171559680. Its totient is φ = 28872757760.

The previous prime is 61247585359. The next prime is 61247585411. The reversal of 61247585408 is 80458574216.

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, 14838641 + ... + 14842767.

It is an arithmetic number, because the mean of its divisors is an integer number (1345537080).

Almost surely, 2^61247585408 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 61247585408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64585779840).

61247585408 is an abundant number, since it is smaller than the sum of its proper divisors (67923974272).

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

61247585408 is an equidigital number, since it uses as much as digits as its factorization.

61247585408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306 (or 4223 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 61247585408 in words is "sixty-one billion, two hundred forty-seven million, five hundred eighty-five thousand, four hundred eight".