22155551045551 has 8 divisors (see below), whose sum is σ = 27622505199744. Its totient is φ = 17264065749720.

The previous prime is 22155551045549. The next prime is 22155551045567. The reversal of 22155551045551 is 15554015555122.

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 22155551045551 - 2¹ = 22155551045549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155551045501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143867214505 + ... + 143867214658.

It is an arithmetic number, because the mean of its divisors is an integer number (3452813149968).

Almost surely, 2^{22155551045551} is an apocalyptic number.

22155551045551 is a deficient number, since it is larger than the sum of its proper divisors (5466954154193).

22155551045551 is a wasteful number, since it uses less digits than its factorization.

22155551045551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287734429181.

The product of its (nonzero) digits is 1250000, while the sum is 46.

The spelling of 22155551045551 in words is "twenty-two trillion, one hundred fifty-five billion, five hundred fifty-one million, forty-five thousand, five hundred fifty-one".