51442335455 has 16 divisors (see below), whose sum is σ = 70622492160. Its totient is φ = 35238242592.

The previous prime is 51442335443. The next prime is 51442335457. The reversal of 51442335455 is 55453324415.

It is not a de Polignac number, because 51442335455 - 2⁶ = 51442335391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442335457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726125 + ... + 793814.

It is an arithmetic number, because the mean of its divisors is an integer number (4413905760).

Almost surely, 2^51442335455 is an apocalyptic number.

51442335455 is a deficient number, since it is larger than the sum of its proper divisors (19180156705).

51442335455 is a wasteful number, since it uses less digits than its factorization.

51442335455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520918.

The product of its digits is 720000, while the sum is 41.

The spelling of 51442335455 in words is "fifty-one billion, four hundred forty-two million, three hundred thirty-five thousand, four hundred fifty-five".