22355781147 has 48 divisors (see below), whose sum is σ = 37497088512. Its totient is φ = 12570405120.

The previous prime is 22355781139. The next prime is 22355781169. The reversal of 22355781147 is 74118755322.

22355781147 is a `hidden beast` number, since 2 + 2 + 3 + 557 + 81 + 14 + 7 = 666.

It is not a de Polignac number, because 22355781147 - 2³ = 22355781139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22355781947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2442163 + ... + 2451299.

It is an arithmetic number, because the mean of its divisors is an integer number (781189344).

Almost surely, 2^22355781147 is an apocalyptic number.

22355781147 is a deficient number, since it is larger than the sum of its proper divisors (15141307365).

22355781147 is a wasteful number, since it uses less digits than its factorization.

22355781147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768 (or 9765 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

It can be divided in two parts, 223557 and 81147, that added together give a square (304704 = 552²).

The spelling of 22355781147 in words is "twenty-two billion, three hundred fifty-five million, seven hundred eighty-one thousand, one hundred forty-seven".