51233406620635 has 32 divisors (see below), whose sum is σ = 64203103949760. Its totient is φ = 39198281213952.

The previous prime is 51233406620623. The next prime is 51233406620713. The reversal of 51233406620635 is 53602660433215.

It is a cyclic number.

It is not a de Polignac number, because 51233406620635 - 2¹¹ = 51233406618587 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117339247 + ... + 117775063.

It is an arithmetic number, because the mean of its divisors is an integer number (2006346998430).

Almost surely, 2^{51233406620635} is an apocalyptic number.

51233406620635 is a deficient number, since it is larger than the sum of its proper divisors (12969697329125).

51233406620635 is a wasteful number, since it uses less digits than its factorization.

51233406620635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443535.

The product of its (nonzero) digits is 2332800, while the sum is 46.

The spelling of 51233406620635 in words is "fifty-one trillion, two hundred thirty-three billion, four hundred six million, six hundred twenty thousand, six hundred thirty-five".