26888937780 has 48 divisors (see below), whose sum is σ = 75298293504. Its totient is φ = 7169500800.

The previous prime is 26888937767. The next prime is 26888937787. The reversal of 26888937780 is 8773988862.

It is a super-2 number, since 2×26888937780² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26888937787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571429 + ... + 616691.

It is an arithmetic number, because the mean of its divisors is an integer number (1568714448).

Almost surely, 2^26888937780 is an apocalyptic number.

26888937780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26888937780 is an abundant number, since it is smaller than the sum of its proper divisors (48409355724).

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

26888937780 is a wasteful number, since it uses less digits than its factorization.

26888937780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55176 (or 55174 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 26888937780 in words is "twenty-six billion, eight hundred eighty-eight million, nine hundred thirty-seven thousand, seven hundred eighty".