26600988540 has 48 divisors (see below), whose sum is σ = 85123164672. Its totient is φ = 6080225856.

The previous prime is 26600988539. The next prime is 26600988541. The reversal of 26600988540 is 4588900662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26600988539) and next prime (26600988541).

It is a super-2 number, since 2×26600988540² (a number of 22 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 26600988540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26600988541) 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, 31667424 + ... + 31668263.

It is an arithmetic number, because the mean of its divisors is an integer number (1773399264).

Almost surely, 2^26600988540 is an apocalyptic number.

26600988540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26600988540 is an abundant number, since it is smaller than the sum of its proper divisors (58522176132).

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

26600988540 is a wasteful number, since it uses less digits than its factorization.

26600988540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63335706 (or 63335704 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 26600988540 in words is "twenty-six billion, six hundred million, nine hundred eighty-eight thousand, five hundred forty".