78127631223 has 8 divisors (see below), whose sum is σ = 104809256448. Its totient is φ = 51765546744.

The previous prime is 78127631159. The next prime is 78127631233. The reversal of 78127631223 is 32213672187.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78127631223 - 2⁶ = 78127631159 is a prime.

It is a super-2 number, since 2×78127631223² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78127631233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79884615 + ... + 79885592.

It is an arithmetic number, because the mean of its divisors is an integer number (13101157056).

Almost surely, 2^78127631223 is an apocalyptic number.

78127631223 is a deficient number, since it is larger than the sum of its proper divisors (26681625225).

78127631223 is a wasteful number, since it uses less digits than its factorization.

78127631223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159770373.

The product of its digits is 169344, while the sum is 42.

The spelling of 78127631223 in words is "seventy-eight billion, one hundred twenty-seven million, six hundred thirty-one thousand, two hundred twenty-three".