61388752558806 has 16 divisors (see below), whose sum is σ = 136419450130800. Its totient is φ = 20462917519584.

The previous prime is 61388752558739. The next prime is 61388752558829. The reversal of 61388752558806 is 60885525788316.

61388752558806 is a `hidden beast` number, since 6 + 1 + 38 + 8 + 7 + 5 + 2 + 5 + 588 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568414375491 + ... + 568414375598.

It is an arithmetic number, because the mean of its divisors is an integer number (8526215633175).

Almost surely, 2^{61388752558806} is an apocalyptic number.

61388752558806 is an abundant number, since it is smaller than the sum of its proper divisors (75030697571994).

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

61388752558806 is a wasteful number, since it uses less digits than its factorization.

61388752558806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136828751100 (or 1136828751094 counting only the distinct ones).

The product of its (nonzero) digits is 774144000, while the sum is 72.

The spelling of 61388752558806 in words is "sixty-one trillion, three hundred eighty-eight billion, seven hundred fifty-two million, five hundred fifty-eight thousand, eight hundred six".