51677677615 has 4 divisors (see below), whose sum is σ = 62013213144. Its totient is φ = 41342142088.

The previous prime is 51677677603. The next prime is 51677677631.

It is a happy number.

51677677615 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 51677677615 - 2¹⁵ = 51677644847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51677677615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5167767757 + ... + 5167767766.

It is an arithmetic number, because the mean of its divisors is an integer number (15503303286).

Almost surely, 2^51677677615 is an apocalyptic number.

51677677615 is a deficient number, since it is larger than the sum of its proper divisors (10335535529).

51677677615 is a wasteful number, since it uses less digits than its factorization.

51677677615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335535528.

The product of its digits is 12965400, while the sum is 58.

The spelling of 51677677615 in words is "fifty-one billion, six hundred seventy-seven million, six hundred seventy-seven thousand, six hundred fifteen".