51309332357 has 8 divisors (see below), whose sum is σ = 54755306496. Its totient is φ = 47910889152.

The previous prime is 51309332339. The next prime is 51309332387. The reversal of 51309332357 is 75323390315.

51309332357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51309332357 - 2⁸ = 51309332101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51309332387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11880503 + ... + 11884820.

It is an arithmetic number, because the mean of its divisors is an integer number (6844413312).

Almost surely, 2^51309332357 is an apocalyptic number.

It is an amenable number.

51309332357 is a deficient number, since it is larger than the sum of its proper divisors (3445974139).

51309332357 is a wasteful number, since it uses less digits than its factorization.

51309332357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23765467.

The product of its (nonzero) digits is 255150, while the sum is 41.

The spelling of 51309332357 in words is "fifty-one billion, three hundred nine million, three hundred thirty-two thousand, three hundred fifty-seven".