6161263515 has 64 divisors (see below), whose sum is σ = 12174727680. Its totient is φ = 2930878080.

The previous prime is 6161263499. The next prime is 6161263517. The reversal of 6161263515 is 5153621616.

6161263515 is a `hidden beast` number, since 6 + 1 + 6 + 1 + 2 + 635 + 15 = 666.

It is not a de Polignac number, because 6161263515 - 2⁴ = 6161263499 is a prime.

It is a super-2 number, since 2×6161263515² = 75922336202540310450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6161263515.

It is not an unprimeable number, because it can be changed into a prime (6161263517) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39564 + ... + 117846.

It is an arithmetic number, because the mean of its divisors is an integer number (190230120).

Almost surely, 2^6161263515 is an apocalyptic number.

6161263515 is a deficient number, since it is larger than the sum of its proper divisors (6013464165).

6161263515 is a wasteful number, since it uses less digits than its factorization.

6161263515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78361 (or 78355 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 6161263515 is about 78493.7164045632. The cubic root of 6161263515 is about 1833.2566171939.

The spelling of 6161263515 in words is "six billion, one hundred sixty-one million, two hundred sixty-three thousand, five hundred fifteen".