51122784752646 has 16 divisors (see below), whose sum is σ = 102245805481008. Its totient is φ = 17040888921600.

The previous prime is 51122784752629. The next prime is 51122784752651. The reversal of 51122784752646 is 64625748722115.

It is a super-2 number, since 2×51122784752646² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51122784752646.

It is a congruent number.

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, 6950995 + ... + 12270366.

It is an arithmetic number, because the mean of its divisors is an integer number (6390362842563).

Almost surely, 2^{51122784752646} is an apocalyptic number.

51122784752646 is an abundant number, since it is smaller than the sum of its proper divisors (51123020728362).

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

51122784752646 is a wasteful number, since it uses less digits than its factorization.

51122784752646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19664647.

The product of its digits is 45158400, while the sum is 60.

The spelling of 51122784752646 in words is "fifty-one trillion, one hundred twenty-two billion, seven hundred eighty-four million, seven hundred fifty-two thousand, six hundred forty-six".