51355380507 has 8 divisors (see below), whose sum is σ = 68572937280. Its totient is φ = 34187372040.

The previous prime is 51355380473. The next prime is 51355380521. The reversal of 51355380507 is 70508355315.

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

It is not a de Polignac number, because 51355380507 - 2⁷ = 51355380379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51355380577) 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, 12384657 + ... + 12388802.

It is an arithmetic number, because the mean of its divisors is an integer number (8571617160).

Almost surely, 2^51355380507 is an apocalyptic number.

51355380507 is a deficient number, since it is larger than the sum of its proper divisors (17217556773).

51355380507 is a wasteful number, since it uses less digits than its factorization.

51355380507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24774153.

The product of its (nonzero) digits is 315000, while the sum is 42.

The spelling of 51355380507 in words is "fifty-one billion, three hundred fifty-five million, three hundred eighty thousand, five hundred seven".