5156638683551 has 8 divisors (see below), whose sum is σ = 5384308522320. Its totient is φ = 4932292492288.

The previous prime is 5156638683517. The next prime is 5156638683589. The reversal of 5156638683551 is 1553868366515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5156638683551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156638683751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830908706 + ... + 830914911.

It is an arithmetic number, because the mean of its divisors is an integer number (673038565290).

Almost surely, 2^{5156638683551} is an apocalyptic number.

5156638683551 is a deficient number, since it is larger than the sum of its proper divisors (227669838769).

5156638683551 is a wasteful number, since it uses less digits than its factorization.

5156638683551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661823753.

The product of its digits is 77760000, while the sum is 62.

The spelling of 5156638683551 in words is "five trillion, one hundred fifty-six billion, six hundred thirty-eight million, six hundred eighty-three thousand, five hundred fifty-one".