61401059124 has 12 divisors (see below), whose sum is σ = 143269137984. Its totient is φ = 20467019704.

The previous prime is 61401059123. The next prime is 61401059177. The reversal of 61401059124 is 42195010416.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61401059123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558377452 + ... + 2558377475.

It is an arithmetic number, because the mean of its divisors is an integer number (11939094832).

Almost surely, 2^61401059124 is an apocalyptic number.

It is an amenable number.

61401059124 is an abundant number, since it is smaller than the sum of its proper divisors (81868078860).

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

61401059124 is a wasteful number, since it uses less digits than its factorization.

61401059124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116754934 (or 5116754932 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 61401059124 in words is "sixty-one billion, four hundred one million, fifty-nine thousand, one hundred twenty-four".