51307742253 has 8 divisors (see below), whose sum is σ = 72010866400. Its totient is φ = 32404889808.

The previous prime is 51307742249. The next prime is 51307742263. The reversal of 51307742253 is 35224770315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51307742253 - 2² = 51307742249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51307742263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450067858 + ... + 450067971.

It is an arithmetic number, because the mean of its divisors is an integer number (9001358300).

Almost surely, 2^51307742253 is an apocalyptic number.

It is an amenable number.

51307742253 is a deficient number, since it is larger than the sum of its proper divisors (20703124147).

51307742253 is a wasteful number, since it uses less digits than its factorization.

51307742253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900135851.

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 51307742253 in words is "fifty-one billion, three hundred seven million, seven hundred forty-two thousand, two hundred fifty-three".