51121244146 has 16 divisors (see below), whose sum is σ = 88019115840. Its totient is φ = 21813430320.

The previous prime is 51121244137. The next prime is 51121244173. The reversal of 51121244146 is 64144212115.

It is a super-2 number, since 2×51121244146² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7969540 + ... + 7975951.

It is an arithmetic number, because the mean of its divisors is an integer number (5501194740).

Almost surely, 2^51121244146 is an apocalyptic number.

51121244146 is a deficient number, since it is larger than the sum of its proper divisors (36897871694).

51121244146 is a wasteful number, since it uses less digits than its factorization.

51121244146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15945729.

The product of its digits is 7680, while the sum is 31.

The spelling of 51121244146 in words is "fifty-one billion, one hundred twenty-one million, two hundred forty-four thousand, one hundred forty-six".