26765477772 has 96 divisors (see below), whose sum is σ = 68580255744. Its totient is φ = 8057356800.

The previous prime is 26765477747. The next prime is 26765477777. The reversal of 26765477772 is 27777456762.

It is not an unprimeable number, because it can be changed into a prime (26765477777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25226122 + ... + 25227182.

It is an arithmetic number, because the mean of its divisors is an integer number (714377664).

Almost surely, 2^26765477772 is an apocalyptic number.

26765477772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26765477772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34290127872).

26765477772 is an abundant number, since it is smaller than the sum of its proper divisors (41814777972).

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

26765477772 is a wasteful number, since it uses less digits than its factorization.

26765477772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159 (or 2157 counting only the distinct ones).

The product of its digits is 48404160, while the sum is 60.

The spelling of 26765477772 in words is "twenty-six billion, seven hundred sixty-five million, four hundred seventy-seven thousand, seven hundred seventy-two".