26321052690 has 48 divisors (see below), whose sum is σ = 68453356608. Its totient is φ = 7017037728.

The previous prime is 26321052679. The next prime is 26321052707. The reversal of 26321052690 is 9625012362.

26321052690 is a `hidden beast` number, since 2 + 6 + 32 + 10 + 526 + 90 = 666.

It is a super-2 number, since 2×26321052690² (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 23 ways as a sum of consecutive naturals, for example, 309817 + ... + 385523.

It is an arithmetic number, because the mean of its divisors is an integer number (1426111596).

Almost surely, 2^26321052690 is an apocalyptic number.

26321052690 is an abundant number, since it is smaller than the sum of its proper divisors (42132303918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26321052690 is a wasteful number, since it uses less digits than its factorization.

26321052690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79583 (or 79580 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 26321052690 in words is "twenty-six billion, three hundred twenty-one million, fifty-two thousand, six hundred ninety".