22506061391 has 8 divisors (see below), whose sum is σ = 24795157968. Its totient is φ = 20257480000.

The previous prime is 22506061379. The next prime is 22506061397. The reversal of 22506061391 is 19316060522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22506061391 - 2⁶ = 22506061327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22506061397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10127630 + ... + 10129851.

It is an arithmetic number, because the mean of its divisors is an integer number (3099394746).

Almost surely, 2^22506061391 is an apocalyptic number.

22506061391 is a deficient number, since it is larger than the sum of its proper divisors (2289096577).

22506061391 is a wasteful number, since it uses less digits than its factorization.

22506061391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20257593.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 22506061391 in words is "twenty-two billion, five hundred six million, sixty-one thousand, three hundred ninety-one".