51233406620634 has 128 divisors (see below), whose sum is σ = 130463466946560. Its totient is φ = 14599144425600.

The previous prime is 51233406620623. The next prime is 51233406620713. The reversal of 51233406620634 is 43602660433215.

51233406620634 is a `hidden beast` number, since 5 + 1 + 2 + 3 + 3 + 4 + 0 + 6 + 6 + 2 + 0 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51233406620634.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 213610039 + ... + 213849749.

It is an arithmetic number, because the mean of its divisors is an integer number (1019245835520).

Almost surely, 2^{51233406620634} is an apocalyptic number.

51233406620634 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51233406620634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65231733473280).

51233406620634 is an abundant number, since it is smaller than the sum of its proper divisors (79230060325926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51233406620634 is a wasteful number, since it uses less digits than its factorization.

51233406620634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241233 (or 241227 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 51233406620634 in words is "fifty-one trillion, two hundred thirty-three billion, four hundred six million, six hundred twenty thousand, six hundred thirty-four".