5156515655 has 4 divisors (see below), whose sum is σ = 6187818792. Its totient is φ = 4125212520.

The previous prime is 5156515631. The next prime is 5156515657. The reversal of 5156515655 is 5565156515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5565156515 = 5 ⋅1113031303.

It is not a de Polignac number, because 5156515655 - 2¹⁰ = 5156514631 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 (5156515657) 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, 515651561 + ... + 515651570.

It is an arithmetic number, because the mean of its divisors is an integer number (1546954698).

Almost surely, 2^5156515655 is an apocalyptic number.

5156515655 is a deficient number, since it is larger than the sum of its proper divisors (1031303137).

5156515655 is a wasteful number, since it uses less digits than its factorization.

5156515655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031303136.

The product of its digits is 562500, while the sum is 44.

The square root of 5156515655 is about 71808.8828418880. The cubic root of 5156515655 is about 1727.6354763021.

The spelling of 5156515655 in words is "five billion, one hundred fifty-six million, five hundred fifteen thousand, six hundred fifty-five".