2621251604100 has 144 divisors (see below), whose sum is σ = 7661137655808. Its totient is φ = 691911173760.

The previous prime is 2621251604099. The next prime is 2621251604123. The reversal of 2621251604100 is 14061521262.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75594967 + ... + 75629633.

It is an arithmetic number, because the mean of its divisors is an integer number (53202344832).

Almost surely, 2^{2621251604100} is an apocalyptic number.

2621251604100 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 2621251604100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3830568827904).

2621251604100 is an abundant number, since it is smaller than the sum of its proper divisors (5039886051708).

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

2621251604100 is a wasteful number, since it uses less digits than its factorization.

2621251604100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37234 (or 37227 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 2621251604100 in words is "two trillion, six hundred twenty-one billion, two hundred fifty-one million, six hundred four thousand, one hundred".