51132521345 has 8 divisors (see below), whose sum is σ = 61390042560. Its totient is φ = 40885339120.

The previous prime is 51132521333. The next prime is 51132521353. The reversal of 51132521345 is 54312523115.

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

It is not a de Polignac number, because 51132521345 - 2¹⁶ = 51132455809 is a prime.

It is a super-2 number, since 2×51132521345² (a number of 22 digits) contains 22 as substring.

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, 2573861 + ... + 2593650.

It is an arithmetic number, because the mean of its divisors is an integer number (7673755320).

Almost surely, 2^51132521345 is an apocalyptic number.

It is an amenable number.

51132521345 is a deficient number, since it is larger than the sum of its proper divisors (10257521215).

51132521345 is a wasteful number, since it uses less digits than its factorization.

51132521345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169495.

The product of its digits is 18000, while the sum is 32.

The spelling of 51132521345 in words is "fifty-one billion, one hundred thirty-two million, five hundred twenty-one thousand, three hundred forty-five".