22143155531545 has 8 divisors (see below), whose sum is σ = 26573651541000. Its totient is φ = 17713281156480.

The previous prime is 22143155531533. The next prime is 22143155531593. The reversal of 22143155531545 is 54513555134122.

It can be written as a sum of positive squares in 4 ways, for example, as 5540619237904 + 16602536293641 = 2353852^2 + 4074621^2 .

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

It is not a de Polignac number, because 22143155531545 - 2²⁷ = 22143021313817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22143155531495 and 22143155531504.

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, 155330226 + ... + 155472715.

It is an arithmetic number, because the mean of its divisors is an integer number (3321706442625).

Almost surely, 2^{22143155531545} is an apocalyptic number.

It is an amenable number.

22143155531545 is a deficient number, since it is larger than the sum of its proper divisors (4430496009455).

22143155531545 is a wasteful number, since it uses less digits than its factorization.

22143155531545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310817195.

The product of its digits is 1800000, while the sum is 46.

The spelling of 22143155531545 in words is "twenty-two trillion, one hundred forty-three billion, one hundred fifty-five million, five hundred thirty-one thousand, five hundred forty-five".