51132515626 has 8 divisors (see below), whose sum is σ = 79343558820. Its totient is φ = 24684662688.

The previous prime is 51132515611. The next prime is 51132515633. The reversal of 51132515626 is 62651523115.

It is a happy number.

It is a Cunningham number, because it is equal to 226125²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 51132515625 + 1 = 226125^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51132515626² (a number of 22 digits) contains 22 as substring.

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, 440797491 + ... + 440797606.

Almost surely, 2^51132515626 is an apocalyptic number.

51132515626 is a deficient number, since it is larger than the sum of its proper divisors (28211043194).

51132515626 is a wasteful number, since it uses less digits than its factorization.

51132515626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881595128.

The product of its digits is 54000, while the sum is 37.

The spelling of 51132515626 in words is "fifty-one billion, one hundred thirty-two million, five hundred fifteen thousand, six hundred twenty-six".