51015515410540 has 12 divisors (see below), whose sum is σ = 107132582362176. Its totient is φ = 20406206164208.

The previous prime is 51015515410513. The next prime is 51015515410571. The reversal of 51015515410540 is 4501451551015.

It is a self number, because there is not a number n which added to its sum of digits gives 51015515410540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275387885244 + ... + 1275387885283.

It is an arithmetic number, because the mean of its divisors is an integer number (8927715196848).

Almost surely, 2^{51015515410540} is an apocalyptic number.

It is an amenable number.

51015515410540 is an abundant number, since it is smaller than the sum of its proper divisors (56117066951636).

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

51015515410540 is a wasteful number, since it uses less digits than its factorization.

51015515410540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550775770536 (or 2550775770534 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 37.

Adding to 51015515410540 its reverse (4501451551015), we get a palindrome (55516966961555).

The spelling of 51015515410540 in words is "fifty-one trillion, fifteen billion, five hundred fifteen million, four hundred ten thousand, five hundred forty".