26344223772 has 12 divisors (see below), whose sum is σ = 61469855496. Its totient is φ = 8781407920.

The previous prime is 26344223749. The next prime is 26344223803. The reversal of 26344223772 is 27732244362.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×26344223772² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097675979 + ... + 1097676002.

It is an arithmetic number, because the mean of its divisors is an integer number (5122487958).

Almost surely, 2^26344223772 is an apocalyptic number.

It is an amenable number.

26344223772 is an abundant number, since it is smaller than the sum of its proper divisors (35125631724).

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

26344223772 is a wasteful number, since it uses less digits than its factorization.

26344223772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195351988 (or 2195351986 counting only the distinct ones).

The product of its digits is 677376, while the sum is 42.

The spelling of 26344223772 in words is "twenty-six billion, three hundred forty-four million, two hundred twenty-three thousand, seven hundred seventy-two".