20526623611 has 8 divisors (see below), whose sum is σ = 22106727104. Its totient is φ = 18946681920.

The previous prime is 20526623591. The next prime is 20526623617. The reversal of 20526623611 is 11632662502.

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

It is a cyclic number.

It is not a de Polignac number, because 20526623611 - 2³³ = 11936689019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20526623617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403855 + ... + 451831.

It is an arithmetic number, because the mean of its divisors is an integer number (2763340888).

Almost surely, 2^20526623611 is an apocalyptic number.

20526623611 is a deficient number, since it is larger than the sum of its proper divisors (1580103493).

20526623611 is a wasteful number, since it uses less digits than its factorization.

20526623611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80901.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 20526623611 in words is "twenty billion, five hundred twenty-six million, six hundred twenty-three thousand, six hundred eleven".