2621550960 has 960 divisors, whose sum is σ = 11724963840. Its totient is φ = 534159360.

The previous prime is 2621550949. The next prime is 2621551001. The reversal of 2621550960 is 690551262.

2621550960 is a `hidden beast` number, since 26 + 21 + 550 + 9 + 60 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 55777657 + ... + 55777703.

It is an arithmetic number, because the mean of its divisors is an integer number (12213504).

Almost surely, 2^2621550960 is an apocalyptic number.

2621550960 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 2621550960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5862481920).

2621550960 is an abundant number, since it is smaller than the sum of its proper divisors (9103412880).

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

2621550960 is a wasteful number, since it uses less digits than its factorization.

2621550960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 112 counting only the distinct ones).

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

The square root of 2621550960 is about 51201.0835822837. The cubic root of 2621550960 is about 1378.8576557790.

The spelling of 2621550960 in words is "two billion, six hundred twenty-one million, five hundred fifty thousand, nine hundred sixty".