51155642514 has 16 divisors (see below), whose sum is σ = 108329596128. Its totient is φ = 16048828992.

The previous prime is 51155642443. The next prime is 51155642543. The reversal of 51155642514 is 41524655115.

It is a super-2 number, since 2×51155642514² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250762852 + ... + 250763055.

It is an arithmetic number, because the mean of its divisors is an integer number (6770599758).

Almost surely, 2^51155642514 is an apocalyptic number.

51155642514 is an abundant number, since it is smaller than the sum of its proper divisors (57173953614).

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

51155642514 is a wasteful number, since it uses less digits than its factorization.

51155642514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501525929.

The product of its digits is 120000, while the sum is 39.

The spelling of 51155642514 in words is "fifty-one billion, one hundred fifty-five million, six hundred forty-two thousand, five hundred fourteen".