26587640038 has 4 divisors (see below), whose sum is σ = 39881460060. Its totient is φ = 13293820018.

The previous prime is 26587640033. The next prime is 26587640039. The reversal of 26587640038 is 83004678562.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 26587639973 and 26587640000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26587640033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646910008 + ... + 6646910011.

It is an arithmetic number, because the mean of its divisors is an integer number (9970365015).

Almost surely, 2^26587640038 is an apocalyptic number.

26587640038 is a deficient number, since it is larger than the sum of its proper divisors (13293820022).

26587640038 is a wasteful number, since it uses less digits than its factorization.

26587640038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13293820021.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 26587640038 in words is "twenty-six billion, five hundred eighty-seven million, six hundred forty thousand, thirty-eight".