26400462621986 has 4 divisors (see below), whose sum is σ = 39600693932982. Its totient is φ = 13200231310992.

The previous prime is 26400462621983. The next prime is 26400462622019. The reversal of 26400462621986 is 68912626400462.

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

It can be written as a sum of positive squares in only one way, i.e., 22160697475225 + 4239765146761 = 4707515^2 + 2059069^2 .

It is not an unprimeable number, because it can be changed into a prime (26400462621983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600115655495 + ... + 6600115655498.

Almost surely, 2^{26400462621986} is an apocalyptic number.

26400462621986 is a deficient number, since it is larger than the sum of its proper divisors (13200231310996).

26400462621986 is a wasteful number, since it uses less digits than its factorization.

26400462621986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13200231310995.

The product of its (nonzero) digits is 11943936, while the sum is 56.

The spelling of 26400462621986 in words is "twenty-six trillion, four hundred billion, four hundred sixty-two million, six hundred twenty-one thousand, nine hundred eighty-six".