51522021235466 has 16 divisors (see below), whose sum is σ = 84040689648456. Its totient is φ = 23590369022976.

The previous prime is 51522021235453. The next prime is 51522021235493. The reversal of 51522021235466 is 66453212022515.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46428265641241 + 5093755594225 = 6813829^2 + 2256935^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20477749631 + ... + 20477752146.

Almost surely, 2^{51522021235466} is an apocalyptic number.

51522021235466 is a deficient number, since it is larger than the sum of its proper divisors (32518668412990).

51522021235466 is a wasteful number, since it uses less digits than its factorization.

51522021235466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40955501833.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 51522021235466 in words is "fifty-one trillion, five hundred twenty-two billion, twenty-one million, two hundred thirty-five thousand, four hundred sixty-six".