26531264690 has 32 divisors (see below), whose sum is σ = 54638907264. Its totient is φ = 9086382720.

The previous prime is 26531264677. The next prime is 26531264729. The reversal of 26531264690 is 9646213562.

It is a super-2 number, since 2×26531264690² (a number of 22 digits) contains 22 as substring.

It is a Curzon 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, 145451 + ... + 272430.

It is an arithmetic number, because the mean of its divisors is an integer number (1707465852).

Almost surely, 2^26531264690 is an apocalyptic number.

26531264690 is an abundant number, since it is smaller than the sum of its proper divisors (28107642574).

26531264690 is a wasteful number, since it uses less digits than its factorization.

26531264690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418802.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 26531264690 in words is "twenty-six billion, five hundred thirty-one million, two hundred sixty-four thousand, six hundred ninety".