51654122528 has 18 divisors (see below), whose sum is σ = 101696584941. Its totient is φ = 25826418432.

The previous prime is 51654122521. The next prime is 51654122557. The reversal of 51654122528 is 82522145615.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 37755598864 + 13898523664 = 194308^2 + 117892^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=160708.

It is a super-2 number, since 2×51654122528² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51654122521) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1265576 + ... + 1305752.

Almost surely, 2^51654122528 is an apocalyptic number.

It is an amenable number.

51654122528 is a deficient number, since it is larger than the sum of its proper divisors (50042462413).

51654122528 is an frugal number, since it uses more digits than its factorization.

51654122528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80364 (or 40179 counting only the distinct ones).

The product of its digits is 192000, while the sum is 41.

The spelling of 51654122528 in words is "fifty-one billion, six hundred fifty-four million, one hundred twenty-two thousand, five hundred twenty-eight".