2641565426 has 8 divisors (see below), whose sum is σ = 3966508764. Its totient is φ = 1319395840.

The previous prime is 2641565357. The next prime is 2641565453. The reversal of 2641565426 is 6245651462.

It can be written as a sum of positive squares in 2 ways, for example, as 2460259201 + 181306225 = 49601^2 + 13465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2641565426² = 13955735799677122952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691055 + ... + 694866.

Almost surely, 2^2641565426 is an apocalyptic number.

2641565426 is a deficient number, since it is larger than the sum of its proper divisors (1324943338).

2641565426 is a wasteful number, since it uses less digits than its factorization.

2641565426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386876.

The product of its digits is 345600, while the sum is 41.

The square root of 2641565426 is about 51396.1615881964. The cubic root of 2641565426 is about 1382.3577676870.

The spelling of 2641565426 in words is "two billion, six hundred forty-one million, five hundred sixty-five thousand, four hundred twenty-six".