26616985040 has 40 divisors (see below), whose sum is σ = 61949604168. Its totient is φ = 10635591680.

The previous prime is 26616985013. The next prime is 26616985049. The reversal of 26616985040 is 4058961662.

It can be written as a sum of positive squares in 4 ways, for example, as 4833586576 + 21783398464 = 69524^2 + 147592^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26616985049) 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, 98321 + ... + 250800.

Almost surely, 2^26616985040 is an apocalyptic number.

26616985040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26616985040 is an abundant number, since it is smaller than the sum of its proper divisors (35332619128).

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

26616985040 is a wasteful number, since it uses less digits than its factorization.

26616985040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350087 (or 350081 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 26616985040 in words is "twenty-six billion, six hundred sixteen million, nine hundred eighty-five thousand, forty".