2601621420 has 24 divisors (see below), whose sum is σ = 7284540144. Its totient is φ = 693765696.

The previous prime is 2601621413. The next prime is 2601621427. The reversal of 2601621420 is 241261062.

2601621420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2601621413) and next prime (2601621427).

It is not an unprimeable number, because it can be changed into a prime (2601621427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21680119 + ... + 21680238.

It is an arithmetic number, because the mean of its divisors is an integer number (303522506).

Almost surely, 2^2601621420 is an apocalyptic number.

2601621420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2601621420 is an abundant number, since it is smaller than the sum of its proper divisors (4682918724).

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

2601621420 is a wasteful number, since it uses less digits than its factorization.

2601621420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43360369 (or 43360367 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2601621420 is about 51006.0919890948. The cubic root of 2601621420 is about 1375.3546492349.

Adding to 2601621420 its reverse (241261062), we get a palindrome (2842882482).

The spelling of 2601621420 in words is "two billion, six hundred one million, six hundred twenty-one thousand, four hundred twenty".