26901346820 has 48 divisors (see below), whose sum is σ = 56823061680. Its totient is φ = 10697723904.

The previous prime is 26901346817. The next prime is 26901346841. The reversal of 26901346820 is 2864310962.

It can be written as a sum of positive squares in 8 ways, for example, as 7475677444 + 19425669376 = 86462^2 + 139376^2 .

It is a super-2 number, since 2×26901346820² (a number of 22 digits) contains 22 as substring.

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, 10278152 + ... + 10280768.

It is an arithmetic number, because the mean of its divisors is an integer number (1183813785).

Almost surely, 2^26901346820 is an apocalyptic number.

26901346820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26901346820 is an abundant number, since it is smaller than the sum of its proper divisors (29921714860).

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

26901346820 is a wasteful number, since it uses less digits than its factorization.

26901346820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5432 (or 5430 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 26901346820 in words is "twenty-six billion, nine hundred one million, three hundred forty-six thousand, eight hundred twenty".