21626340541134 has 16 divisors (see below), whose sum is σ = 49431635522688. Its totient is φ = 6178954440312.

The previous prime is 21626340541121. The next prime is 21626340541163. The reversal of 21626340541134 is 43114504362612.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 514912870027 = 21626340541134 / (2 + 1 + 6 + 2 + 6 + 3 + 4 + 0 + 5 + 4 + 1 + 1 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257456434972 + ... + 257456435055.

It is an arithmetic number, because the mean of its divisors is an integer number (3089477220168).

Almost surely, 2^{21626340541134} is an apocalyptic number.

21626340541134 is an abundant number, since it is smaller than the sum of its proper divisors (27805294981554).

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

21626340541134 is a wasteful number, since it uses less digits than its factorization.

21626340541134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514912870039.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 21626340541134 in words is "twenty-one trillion, six hundred twenty-six billion, three hundred forty million, five hundred forty-one thousand, one hundred thirty-four".