78222731361633 has 64 divisors (see below), whose sum is σ = 121863435724800. Its totient is φ = 49494866287680.

The previous prime is 78222731361601. The next prime is 78222731361647. The reversal of 78222731361633 is 33616313722287.

78222731361633 is a `hidden beast` number, since 7 + 8 + 2 + 2 + 2 + 7 + 3 + 13 + 616 + 3 + 3 = 666.

It is not a de Polignac number, because 78222731361633 - 2⁵ = 78222731361601 is a prime.

It is a super-2 number, since 2×78222731361633² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78222731361633.

It is not an unprimeable number, because it can be changed into a prime (78222731361233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50481066 + ... + 52007532.

It is an arithmetic number, because the mean of its divisors is an integer number (1904116183200).

Almost surely, 2^{78222731361633} is an apocalyptic number.

It is an amenable number.

78222731361633 is a deficient number, since it is larger than the sum of its proper divisors (43640704363167).

78222731361633 is a wasteful number, since it uses less digits than its factorization.

78222731361633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527139 (or 1527133 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The spelling of 78222731361633 in words is "seventy-eight trillion, two hundred twenty-two billion, seven hundred thirty-one million, three hundred sixty-one thousand, six hundred thirty-three".