22478479947 has 48 divisors (see below), whose sum is σ = 40642318080. Its totient is φ = 11630520000.

The previous prime is 22478479927. The next prime is 22478479949. The reversal of 22478479947 is 74997487422.

22478479947 is a `hidden beast` number, since 2 + 2 + 4 + 78 + 479 + 94 + 7 = 666.

It is not a de Polignac number, because 22478479947 - 2¹¹ = 22478477899 is a prime.

It is a super-3 number, since 3×22478479947³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (22478479949) 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, 109329 + ... + 238557.

It is an arithmetic number, because the mean of its divisors is an integer number (846714960).

Almost surely, 2^22478479947 is an apocalyptic number.

22478479947 is a deficient number, since it is larger than the sum of its proper divisors (18163838133).

22478479947 is a wasteful number, since it uses less digits than its factorization.

22478479947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129504 (or 129501 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The spelling of 22478479947 in words is "twenty-two billion, four hundred seventy-eight million, four hundred seventy-nine thousand, nine hundred forty-seven".