51158772433 has 4 divisors (see below), whose sum is σ = 51655459648. Its totient is φ = 50662085220.

The previous prime is 51158772409. The next prime is 51158772439. The reversal of 51158772433 is 33427785115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51158772433 - 2¹⁷ = 51158641361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51158772439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248343453 + ... + 248343658.

It is an arithmetic number, because the mean of its divisors is an integer number (12913864912).

Almost surely, 2^51158772433 is an apocalyptic number.

It is an amenable number.

51158772433 is a deficient number, since it is larger than the sum of its proper divisors (496687215).

51158772433 is a wasteful number, since it uses less digits than its factorization.

51158772433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496687214.

The product of its digits is 705600, while the sum is 46.

The spelling of 51158772433 in words is "fifty-one billion, one hundred fifty-eight million, seven hundred seventy-two thousand, four hundred thirty-three".