78181402022253 has 24 divisors (see below), whose sum is σ = 119856929774400. Its totient is φ = 48937920941184.

The previous prime is 78181402022099. The next prime is 78181402022267. The reversal of 78181402022253 is 35222020418187.

78181402022253 is a `hidden beast` number, since 7 + 8 + 18 + 1 + 402 + 0 + 2 + 225 + 3 = 666.

It is not a de Polignac number, because 78181402022253 - 2⁹ = 78181402021741 is a prime.

It is a super-4 number, since 4×78181402022253⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 78181402022199 and 78181402022208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78181402022293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609708633 + ... + 609836846.

It is an arithmetic number, because the mean of its divisors is an integer number (4994038740600).

Almost surely, 2^{78181402022253} is an apocalyptic number.

It is an amenable number.

78181402022253 is a deficient number, since it is larger than the sum of its proper divisors (41675527752147).

78181402022253 is a wasteful number, since it uses less digits than its factorization.

78181402022253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219545921 (or 1219545918 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 78181402022253 in words is "seventy-eight trillion, one hundred eighty-one billion, four hundred two million, twenty-two thousand, two hundred fifty-three".