51121422355 has 4 divisors (see below), whose sum is σ = 61345706832. Its totient is φ = 40897137880.

The previous prime is 51121422349. The next prime is 51121422377. The reversal of 51121422355 is 55322412115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55322412115 = 5 ⋅11064482423.

It is not a de Polignac number, because 51121422355 - 2²³ = 51113033747 is a prime.

It is a super-2 number, since 2×51121422355² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5112142231 + ... + 5112142240.

It is an arithmetic number, because the mean of its divisors is an integer number (15336426708).

Almost surely, 2^51121422355 is an apocalyptic number.

51121422355 is a deficient number, since it is larger than the sum of its proper divisors (10224284477).

51121422355 is a wasteful number, since it uses less digits than its factorization.

51121422355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10224284476.

The product of its digits is 12000, while the sum is 31.

The spelling of 51121422355 in words is "fifty-one billion, one hundred twenty-one million, four hundred twenty-two thousand, three hundred fifty-five".