61331141974804 has 96 divisors (see below), whose sum is σ = 124934292756000. Its totient is φ = 26090397941760.

The previous prime is 61331141974799. The next prime is 61331141974813. The reversal of 61331141974804 is 40847914113316.

It can be written as a sum of positive squares in 16 ways, for example, as 7100466208900 + 54230675765904 = 2664670^2 + 7364148^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9865272 + ... + 14831920.

It is an arithmetic number, because the mean of its divisors is an integer number (1301398882875).

Almost surely, 2^{61331141974804} is an apocalyptic number.

It is an amenable number.

61331141974804 is an abundant number, since it is smaller than the sum of its proper divisors (63603150781196).

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

61331141974804 is a wasteful number, since it uses less digits than its factorization.

61331141974804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966973 (or 4966971 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 61331141974804 in words is "sixty-one trillion, three hundred thirty-one billion, one hundred forty-one million, nine hundred seventy-four thousand, eight hundred four".