26900777820 has 48 divisors (see below), whose sum is σ = 86082490368. Its totient is φ = 6148749120.

The previous prime is 26900777807. The next prime is 26900777821. The reversal of 26900777820 is 2877700962.

It is a self number, because there is not a number n which added to its sum of digits gives 26900777820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26900777821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32024316 + ... + 32025155.

It is an arithmetic number, because the mean of its divisors is an integer number (1793385216).

Almost surely, 2^26900777820 is an apocalyptic number.

26900777820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26900777820 is an abundant number, since it is smaller than the sum of its proper divisors (59181712548).

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

26900777820 is a wasteful number, since it uses less digits than its factorization.

26900777820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64049490 (or 64049488 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 26900777820 in words is "twenty-six billion, nine hundred million, seven hundred seventy-seven thousand, eight hundred twenty".