26670887776644 has 48 divisors (see below), whose sum is σ = 63685298476800. Its totient is φ = 8682730832160.

The previous prime is 26670887776633. The next prime is 26670887776661. The reversal of 26670887776644 is 44667778807662.

It is a super-2 number, since 2×26670887776644² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26670887776644.

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, 3099207 + ... + 7933905.

It is an arithmetic number, because the mean of its divisors is an integer number (1326777051600).

Almost surely, 2^{26670887776644} is an apocalyptic number.

It is an amenable number.

26670887776644 is an abundant number, since it is smaller than the sum of its proper divisors (37014410700156).

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

26670887776644 is a wasteful number, since it uses less digits than its factorization.

26670887776644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4845440 (or 4845438 counting only the distinct ones).

The product of its (nonzero) digits is 6372753408, while the sum is 78.

The spelling of 26670887776644 in words is "twenty-six trillion, six hundred seventy billion, eight hundred eighty-seven million, seven hundred seventy-six thousand, six hundred forty-four".