5155659990 has 128 divisors (see below), whose sum is σ = 15449978880. Its totient is φ = 1213888896.

The previous prime is 5155659947. The next prime is 5155660009. The reversal of 5155659990 is 999565515.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48799 + ... + 112661.

It is an arithmetic number, because the mean of its divisors is an integer number (120702960).

Almost surely, 2^5155659990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5155659990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7724989440).

5155659990 is an abundant number, since it is smaller than the sum of its proper divisors (10294318890).

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

5155659990 is a wasteful number, since it uses less digits than its factorization.

5155659990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63915 (or 63909 counting only the distinct ones).

The product of its (nonzero) digits is 2733750, while the sum is 54.

The square root of 5155659990 is about 71802.9246618827. The cubic root of 5155659990 is about 1727.5399105439.

The spelling of 5155659990 in words is "five billion, one hundred fifty-five million, six hundred fifty-nine thousand, nine hundred ninety".