26387840463 has 12 divisors (see below), whose sum is σ = 35634814488. Its totient is φ = 17369199120.

The previous prime is 26387840461. The next prime is 26387840467. The reversal of 26387840463 is 36404878362.

It is not a de Polignac number, because 26387840463 - 2¹ = 26387840461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26387840461) 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, 685968 + ... + 723413.

It is an arithmetic number, because the mean of its divisors is an integer number (2969567874).

Almost surely, 2^26387840463 is an apocalyptic number.

26387840463 is a deficient number, since it is larger than the sum of its proper divisors (9246974025).

26387840463 is an equidigital number, since it uses as much as digits as its factorization.

26387840463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409542 (or 1409463 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 26387840463 in words is "twenty-six billion, three hundred eighty-seven million, eight hundred forty thousand, four hundred sixty-three".