2611512421 has 16 divisors (see below), whose sum is σ = 3074544000. Its totient is φ = 2171671488.

The previous prime is 2611512389. The next prime is 2611512427. The reversal of 2611512421 is 1242151162.

It is not a de Polignac number, because 2611512421 - 2⁵ = 2611512389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611512427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15735 + ... + 73963.

It is an arithmetic number, because the mean of its divisors is an integer number (192159000).

Almost surely, 2^2611512421 is an apocalyptic number.

It is an amenable number.

2611512421 is a deficient number, since it is larger than the sum of its proper divisors (463031579).

2611512421 is a wasteful number, since it uses less digits than its factorization.

2611512421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58428.

The product of its digits is 960, while the sum is 25.

The square root of 2611512421 is about 51102.9590239156. The cubic root of 2611512421 is about 1377.0954137599.

Adding to 2611512421 its reverse (1242151162), we get a palindrome (3853663583).

The spelling of 2611512421 in words is "two billion, six hundred eleven million, five hundred twelve thousand, four hundred twenty-one".