51299329475 has 12 divisors (see below), whose sum is σ = 63621944304. Its totient is φ = 41032511520.

The previous prime is 51299329439. The next prime is 51299329541. The reversal of 51299329475 is 57492399215.

It is a happy number.

It is not a de Polignac number, because 51299329475 - 2¹⁸ = 51299067331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51299329475.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20624 + ... + 320973.

It is an arithmetic number, because the mean of its divisors is an integer number (5301828692).

Almost surely, 2^51299329475 is an apocalyptic number.

51299329475 is a deficient number, since it is larger than the sum of its proper divisors (12322614829).

51299329475 is a wasteful number, since it uses less digits than its factorization.

51299329475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347614 (or 347609 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 56.

The spelling of 51299329475 in words is "fifty-one billion, two hundred ninety-nine million, three hundred twenty-nine thousand, four hundred seventy-five".