26178564140 has 24 divisors (see below), whose sum is σ = 55292766480. Its totient is φ = 10410895808.

The previous prime is 26178564133. The next prime is 26178564149. The reversal of 26178564140 is 4146587162.

It is a junction number, because it is equal to n+sod(n) for n = 26178564091 and 26178564100.

It is not an unprimeable number, because it can be changed into a prime (26178564149) 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, 3779570 + ... + 3786489.

It is an arithmetic number, because the mean of its divisors is an integer number (2303865270).

Almost surely, 2^26178564140 is an apocalyptic number.

26178564140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26178564140 is an abundant number, since it is smaller than the sum of its proper divisors (29114202340).

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

26178564140 is a wasteful number, since it uses less digits than its factorization.

26178564140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7566241 (or 7566239 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 26178564140 in words is "twenty-six billion, one hundred seventy-eight million, five hundred sixty-four thousand, one hundred forty".