51115434435 has 24 divisors (see below), whose sum is σ = 95415478704. Its totient is φ = 25164521280.

The previous prime is 51115434431. The next prime is 51115434479. The reversal of 51115434435 is 53443451115.

It is not a de Polignac number, because 51115434435 - 2² = 51115434431 is a prime.

It is a super-2 number, since 2×51115434435² (a number of 22 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 51115434435.

It is not an unprimeable number, because it can be changed into a prime (51115434431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43687821 + ... + 43688990.

It is an arithmetic number, because the mean of its divisors is an integer number (3975644946).

Almost surely, 2^51115434435 is an apocalyptic number.

51115434435 is a deficient number, since it is larger than the sum of its proper divisors (44300044269).

51115434435 is a wasteful number, since it uses less digits than its factorization.

51115434435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87376835 (or 87376832 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 51115434435 in words is "fifty-one billion, one hundred fifteen million, four hundred thirty-four thousand, four hundred thirty-five".