2621266505 has 64 divisors (see below), whose sum is σ = 3917894400. Its totient is φ = 1655147520.

The previous prime is 2621266493. The next prime is 2621266547. The reversal of 2621266505 is 5056621262.

2621266505 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 2621266505 - 2²⁸ = 2352831049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2132231 + ... + 2133459.

It is an arithmetic number, because the mean of its divisors is an integer number (61217100).

Almost surely, 2^2621266505 is an apocalyptic number.

It is an amenable number.

2621266505 is a deficient number, since it is larger than the sum of its proper divisors (1296627895).

2621266505 is a wasteful number, since it uses less digits than its factorization.

2621266505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2621266505 is about 51198.3056848564. The cubic root of 2621266505 is about 1378.8077823583.

Adding to 2621266505 its reverse (5056621262), we get a palindrome (7677887767).

The spelling of 2621266505 in words is "two billion, six hundred twenty-one million, two hundred sixty-six thousand, five hundred five".