61552494108 has 192 divisors, whose sum is σ = 193536000000. Its totient is φ = 16536408768.

The previous prime is 61552494079. The next prime is 61552494169. The reversal of 61552494108 is 80149425516.

61552494108 is a `hidden beast` number, since 6 + 1 + 5 + 52 + 494 + 108 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 995893 + ... + 1055891.

It is an arithmetic number, because the mean of its divisors is an integer number (1008000000).

Almost surely, 2^61552494108 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 61552494108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96768000000).

61552494108 is an abundant number, since it is smaller than the sum of its proper divisors (131983505892).

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

61552494108 is a wasteful number, since it uses less digits than its factorization.

61552494108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60101 (or 60093 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 61552494108 in words is "sixty-one billion, five hundred fifty-two million, four hundred ninety-four thousand, one hundred eight".