2621055512124 has 144 divisors (see below), whose sum is σ = 7884917214720. Its totient is φ = 718261084800.

The previous prime is 2621055512027. The next prime is 2621055512129. The reversal of 2621055512124 is 4212155501262.

2621055512124 is a `hidden beast` number, since 2 + 6 + 2 + 10 + 5 + 5 + 512 + 124 = 666.

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 (2621055512129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84094 + ... + 2291109.

Almost surely, 2^{2621055512124} 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 2621055512124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3942458607360).

2621055512124 is an abundant number, since it is smaller than the sum of its proper divisors (5263861702596).

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

2621055512124 is a wasteful number, since it uses less digits than its factorization.

2621055512124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375400 (or 2375395 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 2621055512124 in words is "two trillion, six hundred twenty-one billion, fifty-five million, five hundred twelve thousand, one hundred twenty-four".