61074020508 has 96 divisors (see below), whose sum is σ = 157066560000. Its totient is φ = 18384562944.

The previous prime is 61074020479. The next prime is 61074020519. The reversal of 61074020508 is 80502047016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1516618 + ... + 1556366.

It is an arithmetic number, because the mean of its divisors is an integer number (1636110000).

Almost surely, 2^61074020508 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 61074020508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78533280000).

61074020508 is an abundant number, since it is smaller than the sum of its proper divisors (95992539492).

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

61074020508 is a wasteful number, since it uses less digits than its factorization.

61074020508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40091 (or 40089 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 61074020508 in words is "sixty-one billion, seventy-four million, twenty thousand, five hundred eight".