51011890078944 has 48 divisors (see below), whose sum is σ = 133977476545920. Its totient is φ = 16994913824640.

The previous prime is 51011890078937. The next prime is 51011890078951. The reversal of 51011890078944 is 44987009811015.

It is an interprime number because it is at equal distance from previous prime (51011890078937) and next prime (51011890078951).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141217662 + ... + 141578429.

It is an arithmetic number, because the mean of its divisors is an integer number (2791197428040).

Almost surely, 2^{51011890078944} is an apocalyptic number.

It is an amenable number.

51011890078944 is an abundant number, since it is smaller than the sum of its proper divisors (82965586466976).

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

51011890078944 is a wasteful number, since it uses less digits than its factorization.

51011890078944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282797983 (or 282797975 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 57.

Adding to 51011890078944 its reverse (44987009811015), we get a palindrome (95998899889959).

The spelling of 51011890078944 in words is "fifty-one trillion, eleven billion, eight hundred ninety million, seventy-eight thousand, nine hundred forty-four".