51541620468744 has 128 divisors (see below), whose sum is σ = 155290696473600. Its totient is φ = 13926067948800.

The previous prime is 51541620468727. The next prime is 51541620468761. The reversal of 51541620468744 is 44786402614515.

It is an interprime number because it is at equal distance from previous prime (51541620468727) and next prime (51541620468761).

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 12716782 + ... + 16272669.

It is an arithmetic number, because the mean of its divisors is an integer number (1213208566200).

Almost surely, 2^{51541620468744} is an apocalyptic number.

It is an amenable number.

51541620468744 is an abundant number, since it is smaller than the sum of its proper divisors (103749076004856).

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

51541620468744 is a wasteful number, since it uses less digits than its factorization.

51541620468744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28990043 (or 28990039 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 57.

The spelling of 51541620468744 in words is "fifty-one trillion, five hundred forty-one billion, six hundred twenty million, four hundred sixty-eight thousand, seven hundred forty-four".