22146557111555 has 8 divisors (see below), whose sum is σ = 26576128888272. Its totient is φ = 17717072119648.

The previous prime is 22146557111543. The next prime is 22146557111573. The reversal of 22146557111555 is 55511175564122.

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 22146557111555 - 2⁸ = 22146557111299 is a prime.

It is a Duffinian 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, 21133457 + ... + 22156626.

It is an arithmetic number, because the mean of its divisors is an integer number (3322016111034).

Almost surely, 2^{22146557111555} is an apocalyptic number.

22146557111555 is a deficient number, since it is larger than the sum of its proper divisors (4429571776717).

22146557111555 is a wasteful number, since it uses less digits than its factorization.

22146557111555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43392405.

The product of its digits is 2100000, while the sum is 50.

The spelling of 22146557111555 in words is "twenty-two trillion, one hundred forty-six billion, five hundred fifty-seven million, one hundred eleven thousand, five hundred fifty-five".