51370878726 has 16 divisors (see below), whose sum is σ = 114157508400. Its totient is φ = 17123626224.

The previous prime is 51370878679. The next prime is 51370878737. The reversal of 51370878726 is 62787807315.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 951312569 = 51370878726 / (5 + 1 + 3 + 7 + 0 + 8 + 7 + 8 + 7 + 2 + 6).

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, 475656231 + ... + 475656338.

It is an arithmetic number, because the mean of its divisors is an integer number (7134844275).

Almost surely, 2^51370878726 is an apocalyptic number.

51370878726 is an abundant number, since it is smaller than the sum of its proper divisors (62786629674).

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

51370878726 is a wasteful number, since it uses less digits than its factorization.

51370878726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951312580 (or 951312574 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 51370878726 in words is "fifty-one billion, three hundred seventy million, eight hundred seventy-eight thousand, seven hundred twenty-six".