2656615500 has 864 divisors, whose sum is σ = 11419035264. Its totient is φ = 506880000.

The previous prime is 2656615487. The next prime is 2656615501. The reversal of 2656615500 is 55166562.

It is a happy number.

2656615500 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656615501) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 64795480 + ... + 64795520.

It is an arithmetic number, because the mean of its divisors is an integer number (13216476).

Almost surely, 2^2656615500 is an apocalyptic number.

2656615500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656615500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5709517632).

2656615500 is an abundant number, since it is smaller than the sum of its proper divisors (8762419764).

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

2656615500 is a wasteful number, since it uses less digits than its factorization.

2656615500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2656615500 is about 51542.3660690892. The cubic root of 2656615500 is about 1384.9780826900.

The spelling of 2656615500 in words is "two billion, six hundred fifty-six million, six hundred fifteen thousand, five hundred".