26009879040 has 120 divisors (see below), whose sum is σ = 90079606188. Its totient is φ = 6935961600.

The previous prime is 26009879033. The next prime is 26009879041. The reversal of 26009879040 is 4097890062.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24953889024 + 1055990016 = 157968^2 + 32496^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (26009879041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541411 + ... + 587490.

Almost surely, 2^26009879040 is an apocalyptic number.

26009879040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26009879040 is an abundant number, since it is smaller than the sum of its proper divisors (64069727148).

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

26009879040 is a wasteful number, since it uses less digits than its factorization.

26009879040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128930 (or 1128911 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 26009879040 in words is "twenty-six billion, nine million, eight hundred seventy-nine thousand, forty".