61117718703054 has 128 divisors (see below), whose sum is σ = 136464060966912. Its totient is φ = 18128166819840.

The previous prime is 61117718703047. The next prime is 61117718703077. The reversal of 61117718703054 is 45030781771116.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61117718702988 and 61117718703006.

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, 2661794134 + ... + 2661817094.

It is an arithmetic number, because the mean of its divisors is an integer number (1066125476304).

Almost surely, 2^{61117718703054} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61117718703054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68232030483456).

61117718703054 is an abundant number, since it is smaller than the sum of its proper divisors (75346342263858).

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

61117718703054 is a wasteful number, since it uses less digits than its factorization.

61117718703054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33930.

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 61117718703054 in words is "sixty-one trillion, one hundred seventeen billion, seven hundred eighteen million, seven hundred three thousand, fifty-four".