51121655350 has 24 divisors (see below), whose sum is σ = 95396034888. Its totient is φ = 20382048000.

The previous prime is 51121655317. The next prime is 51121655393. The reversal of 51121655350 is 5355612115.

It is a super-2 number, since 2×51121655350² (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 11 ways as a sum of consecutive naturals, for example, 1649851 + ... + 1680550.

It is an arithmetic number, because the mean of its divisors is an integer number (3974834787).

Almost surely, 2^51121655350 is an apocalyptic number.

51121655350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51121655350 is a deficient number, since it is larger than the sum of its proper divisors (44274379538).

51121655350 is a wasteful number, since it uses less digits than its factorization.

51121655350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330720 (or 3330715 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51121655350 in words is "fifty-one billion, one hundred twenty-one million, six hundred fifty-five thousand, three hundred fifty".