26948021980 has 24 divisors (see below), whose sum is σ = 61735469040. Its totient is φ = 9799280640.

The previous prime is 26948021977. The next prime is 26948021981. The reversal of 26948021980 is 8912084962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26948021981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61245285 + ... + 61245724.

It is an arithmetic number, because the mean of its divisors is an integer number (2572311210).

Almost surely, 2^26948021980 is an apocalyptic number.

26948021980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26948021980 is an abundant number, since it is smaller than the sum of its proper divisors (34787447060).

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

26948021980 is a wasteful number, since it uses less digits than its factorization.

26948021980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122491029 (or 122491027 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 26948021980 in words is "twenty-six billion, nine hundred forty-eight million, twenty-one thousand, nine hundred eighty".