51092121822 has 64 divisors (see below), whose sum is σ = 120607100928. Its totient is φ = 14120064000.

The previous prime is 51092121803. The next prime is 51092121911. The reversal of 51092121822 is 22812129015.

It is a super-2 number, since 2×51092121822² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 3091822 + ... + 3108302.

It is an arithmetic number, because the mean of its divisors is an integer number (1884485952).

Almost surely, 2^51092121822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51092121822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60303550464).

51092121822 is an abundant number, since it is smaller than the sum of its proper divisors (69514979106).

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

51092121822 is a wasteful number, since it uses less digits than its factorization.

51092121822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18905.

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 51092121822 in words is "fifty-one billion, ninety-two million, one hundred twenty-one thousand, eight hundred twenty-two".