61914556116 has 216 divisors, whose sum is σ = 189268410240. Its totient is φ = 17353372608.

The previous prime is 61914556051. The next prime is 61914556127. The reversal of 61914556116 is 61165541916.

61914556116 is a `hidden beast` number, since 6 + 1 + 91 + 4 + 556 + 1 + 1 + 6 = 666.

61914556116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9733345 + ... + 9739703.

It is an arithmetic number, because the mean of its divisors is an integer number (876242640).

Almost surely, 2^61914556116 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 61914556116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94634205120).

61914556116 is an abundant number, since it is smaller than the sum of its proper divisors (127353854124).

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

61914556116 is an equidigital number, since it uses as much as digits as its factorization.

61914556116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447 (or 6424 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The spelling of 61914556116 in words is "sixty-one billion, nine hundred fourteen million, five hundred fifty-six thousand, one hundred sixteen".