2261640455 has 16 divisors (see below), whose sum is σ = 2757348000. Its totient is φ = 1780617600.

The previous prime is 2261640397. The next prime is 2261640467. The reversal of 2261640455 is 5540461622.

2261640455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2261640455 - 2⁶ = 2261640391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67280 + ... + 95130.

It is an arithmetic number, because the mean of its divisors is an integer number (172334250).

Almost surely, 2^2261640455 is an apocalyptic number.

2261640455 is a deficient number, since it is larger than the sum of its proper divisors (495707545).

2261640455 is a wasteful number, since it uses less digits than its factorization.

2261640455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28114.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2261640455 is about 47556.7077813425. The cubic root of 2261640455 is about 1312.6265610987.

The spelling of 2261640455 in words is "two billion, two hundred sixty-one million, six hundred forty thousand, four hundred fifty-five".