26662542380 has 12 divisors (see below), whose sum is σ = 55991339040. Its totient is φ = 10665016944.

The previous prime is 26662542371. The next prime is 26662542383. The reversal of 26662542380 is 8324526662.

It is not an unprimeable number, because it can be changed into a prime (26662542383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666563540 + ... + 666563579.

It is an arithmetic number, because the mean of its divisors is an integer number (4665944920).

Almost surely, 2^26662542380 is an apocalyptic number.

26662542380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26662542380 is an abundant number, since it is smaller than the sum of its proper divisors (29328796660).

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

26662542380 is a wasteful number, since it uses less digits than its factorization.

26662542380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333127128 (or 1333127126 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 26662542380 in words is "twenty-six billion, six hundred sixty-two million, five hundred forty-two thousand, three hundred eighty".