5155661560 has 64 divisors (see below), whose sum is σ = 13277099520. Its totient is φ = 1765031040.

The previous prime is 5155661551. The next prime is 5155661597. The reversal of 5155661560 is 651665515.

It is a super-2 number, since 2×5155661560² = 53161692242523267200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180157 + ... + 206803.

It is an arithmetic number, because the mean of its divisors is an integer number (207454680).

Almost surely, 2^5155661560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5155661560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6638549760).

5155661560 is an abundant number, since it is smaller than the sum of its proper divisors (8121437960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5155661560 is a wasteful number, since it uses less digits than its factorization.

5155661560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27356 (or 27352 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 5155661560 is about 71802.9355945842. The cubic root of 5155661560 is about 1727.5400859005.

The spelling of 5155661560 in words is "five billion, one hundred fifty-five million, six hundred sixty-one thousand, five hundred sixty".