51199294908540 has 48 divisors (see below), whose sum is σ = 147982478192640. Its totient is φ = 13212721266240.

The previous prime is 51199294908529. The next prime is 51199294908547. The reversal of 51199294908540 is 4580949299115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51199294908547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13763249460 + ... + 13763253179.

It is an arithmetic number, because the mean of its divisors is an integer number (3082968295680).

Almost surely, 2^{51199294908540} is an apocalyptic number.

It is an amenable number.

51199294908540 is an abundant number, since it is smaller than the sum of its proper divisors (96783183284100).

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

51199294908540 is a wasteful number, since it uses less digits than its factorization.

51199294908540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27526502682 (or 27526502680 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 66.

The spelling of 51199294908540 in words is "fifty-one trillion, one hundred ninety-nine billion, two hundred ninety-four million, nine hundred eight thousand, five hundred forty".