26129900500 has 48 divisors (see below), whose sum is σ = 62255688768. Its totient is φ = 9501780000.

The previous prime is 26129900497. The next prime is 26129900509. The reversal of 26129900500 is 500992162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26129900509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2369946 + ... + 2380945.

It is an arithmetic number, because the mean of its divisors is an integer number (1296993516).

Almost surely, 2^26129900500 is an apocalyptic number.

26129900500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26129900500 is an abundant number, since it is smaller than the sum of its proper divisors (36125788268).

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

26129900500 is a wasteful number, since it uses less digits than its factorization.

26129900500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750921 (or 4750909 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

It can be divided in two parts, 26129 and 900500, that added together give a palindrome (926629).

The spelling of 26129900500 in words is "twenty-six billion, one hundred twenty-nine million, nine hundred thousand, five hundred".