51333225162661 has 16 divisors (see below), whose sum is σ = 55864465005888. Its totient is φ = 46887288739200.

The previous prime is 51333225162641. The next prime is 51333225162719. The reversal of 51333225162661 is 16626152233315.

It is not a de Polignac number, because 51333225162661 - 2⁴³ = 42537132140453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51333225162641) 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, 42842520 + ... + 44024401.

It is an arithmetic number, because the mean of its divisors is an integer number (3491529062868).

Almost surely, 2^{51333225162661} is an apocalyptic number.

It is an amenable number.

51333225162661 is a deficient number, since it is larger than the sum of its proper divisors (4531239843227).

51333225162661 is a wasteful number, since it uses less digits than its factorization.

51333225162661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86867412.

The product of its digits is 1166400, while the sum is 46.

Adding to 51333225162661 its reverse (16626152233315), we get a palindrome (67959377395976).

The spelling of 51333225162661 in words is "fifty-one trillion, three hundred thirty-three billion, two hundred twenty-five million, one hundred sixty-two thousand, six hundred sixty-one".