5515161615 has 40 divisors (see below), whose sum is σ = 10034046000. Its totient is φ = 2897503488.

The previous prime is 5515161611. The next prime is 5515161629. The reversal of 5515161615 is 5161615155.

It is a happy number.

It is not a de Polignac number, because 5515161615 - 2² = 5515161611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5515161615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515161611) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 74490 + ... + 128759.

It is an arithmetic number, because the mean of its divisors is an integer number (250851150).

Almost surely, 2^5515161615 is an apocalyptic number.

5515161615 is a deficient number, since it is larger than the sum of its proper divisors (4518884385).

5515161615 is a wasteful number, since it uses less digits than its factorization.

5515161615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203333 (or 203324 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

The square root of 5515161615 is about 74264.1341092724. The cubic root of 5515161615 is about 1766.7946729171.

The spelling of 5515161615 in words is "five billion, five hundred fifteen million, one hundred sixty-one thousand, six hundred fifteen".