51177877115 has 4 divisors (see below), whose sum is σ = 61413452544. Its totient is φ = 40942301688.

The previous prime is 51177877111. The next prime is 51177877123.

51177877115 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51177877115 - 2² = 51177877111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51177877111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5117787707 + ... + 5117787716.

It is an arithmetic number, because the mean of its divisors is an integer number (15353363136).

Almost surely, 2^51177877115 is an apocalyptic number.

51177877115 is a deficient number, since it is larger than the sum of its proper divisors (10235575429).

51177877115 is a wasteful number, since it uses less digits than its factorization.

51177877115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10235575428.

The product of its digits is 480200, while the sum is 50.

The spelling of 51177877115 in words is "fifty-one billion, one hundred seventy-seven million, eight hundred seventy-seven thousand, one hundred fifteen".