26710153640 has 128 divisors (see below), whose sum is σ = 64660377600. Its totient is φ = 9900299520.

The previous prime is 26710153577. The next prime is 26710153651. The reversal of 26710153640 is 4635101762.

It is a self number, because there is not a number n which added to its sum of digits gives 26710153640.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6495185 + ... + 6499295.

It is an arithmetic number, because the mean of its divisors is an integer number (505159200).

Almost surely, 2^26710153640 is an apocalyptic number.

26710153640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26710153640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32330188800).

26710153640 is an abundant number, since it is smaller than the sum of its proper divisors (37950223960).

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

26710153640 is a wasteful number, since it uses less digits than its factorization.

26710153640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327 (or 4323 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 26710153640 in words is "twenty-six billion, seven hundred ten million, one hundred fifty-three thousand, six hundred forty".