21542622083 has 4 divisors (see below), whose sum is σ = 22237545408. Its totient is φ = 20847698760.

The previous prime is 21542622061. The next prime is 21542622103. The reversal of 21542622083 is 38022624512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21542622083 - 2⁶ = 21542622019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21542622053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347461616 + ... + 347461677.

It is an arithmetic number, because the mean of its divisors is an integer number (5559386352).

Almost surely, 2^21542622083 is an apocalyptic number.

21542622083 is a deficient number, since it is larger than the sum of its proper divisors (694923325).

21542622083 is an equidigital number, since it uses as much as digits as its factorization.

21542622083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694923324.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 21542622083 in words is "twenty-one billion, five hundred forty-two million, six hundred twenty-two thousand, eighty-three".