61579700094 has 48 divisors (see below), whose sum is σ = 135346288896. Its totient is φ = 18523934400.

The previous prime is 61579700069. The next prime is 61579700113. The reversal of 61579700094 is 49000797516.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1213899 + ... + 1263609.

It is an arithmetic number, because the mean of its divisors is an integer number (2819714352).

Almost surely, 2^61579700094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61579700094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67673144448).

61579700094 is an abundant number, since it is smaller than the sum of its proper divisors (73766588802).

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

61579700094 is a wasteful number, since it uses less digits than its factorization.

61579700094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50001 (or 49864 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The spelling of 61579700094 in words is "sixty-one billion, five hundred seventy-nine million, seven hundred thousand, ninety-four".