61644340095992 has 24 divisors (see below), whose sum is σ = 115885711482240. Its totient is φ = 30741693822960.

The previous prime is 61644340095941. The next prime is 61644340096013. The reversal of 61644340095992 is 29959004344616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25091384 + ... + 27438407.

It is an arithmetic number, because the mean of its divisors is an integer number (4828571311760).

Almost surely, 2^{61644340095992} is an apocalyptic number.

It is an amenable number.

61644340095992 is a deficient number, since it is larger than the sum of its proper divisors (54241371386248).

61644340095992 is an equidigital number, since it uses as much as digits as its factorization.

61644340095992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52530563 (or 52530176 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 62.

The spelling of 61644340095992 in words is "sixty-one trillion, six hundred forty-four billion, three hundred forty million, ninety-five thousand, nine hundred ninety-two".