22155551045445 has 16 divisors (see below), whose sum is σ = 35449066275840. Its totient is φ = 11816232356544.

The previous prime is 22155551045437. The next prime is 22155551045471. The reversal of 22155551045445 is 54454015555122.

It is a happy number.

It is not a de Polignac number, because 22155551045445 - 2³ = 22155551045437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22155551045394 and 22155551045403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791205 + ... + 6703514.

It is an arithmetic number, because the mean of its divisors is an integer number (2215566642240).

Almost surely, 2^{22155551045445} is an apocalyptic number.

It is an amenable number.

22155551045445 is a deficient number, since it is larger than the sum of its proper divisors (13293515230395).

22155551045445 is a wasteful number, since it uses less digits than its factorization.

22155551045445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7691804.

The product of its (nonzero) digits is 4000000, while the sum is 48.

The spelling of 22155551045445 in words is "twenty-two trillion, one hundred fifty-five billion, five hundred fifty-one million, forty-five thousand, four hundred forty-five".