78231342186352 has 20 divisors (see below), whose sum is σ = 152240948953416. Its totient is φ = 38943355359680.

The previous prime is 78231342186337. The next prime is 78231342186353. The reversal of 78231342186352 is 25368124313287.

It is a super-2 number, since 2×78231342186352² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78231342186293 and 78231342186302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78231342186353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10769729599 + ... + 10769736862.

Almost surely, 2^{78231342186352} is an apocalyptic number.

It is an amenable number.

78231342186352 is a deficient number, since it is larger than the sum of its proper divisors (74009606767064).

78231342186352 is a wasteful number, since it uses less digits than its factorization.

78231342186352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21539466696 (or 21539466690 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 55.

The spelling of 78231342186352 in words is "seventy-eight trillion, two hundred thirty-one billion, three hundred forty-two million, one hundred eighty-six thousand, three hundred fifty-two".