20800026530 has 16 divisors (see below), whose sum is σ = 37471610880. Its totient is φ = 8312996592.

The previous prime is 20800026529. The next prime is 20800026547. The reversal of 20800026530 is 3562000802.

It is a super-2 number, since 2×20800026530² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20800026530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864290 + ... + 888029.

It is an arithmetic number, because the mean of its divisors is an integer number (2341975680).

Almost surely, 2^20800026530 is an apocalyptic number.

20800026530 is a deficient number, since it is larger than the sum of its proper divisors (16671584350).

20800026530 is a wasteful number, since it uses less digits than its factorization.

20800026530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753513.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 20800026530 in words is "twenty billion, eight hundred million, twenty-six thousand, five hundred thirty".