26340400420 has 24 divisors (see below), whose sum is σ = 55395857664. Its totient is φ = 10520728416.

The previous prime is 26340400417. The next prime is 26340400421. The reversal of 26340400420 is 2400404362.

It is not an unprimeable number, because it can be changed into a prime (26340400421) 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, 950484 + ... + 977803.

It is an arithmetic number, because the mean of its divisors is an integer number (2308160736).

Almost surely, 2^26340400420 is an apocalyptic number.

26340400420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26340400420 is an abundant number, since it is smaller than the sum of its proper divisors (29055457244).

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

26340400420 is a wasteful number, since it uses less digits than its factorization.

26340400420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928979 (or 1928977 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 26340400420 its reverse (2400404362), we get a palindrome (28740804782).

The spelling of 26340400420 in words is "twenty-six billion, three hundred forty million, four hundred thousand, four hundred twenty".