78520801231 has 8 divisors (see below), whose sum is σ = 82684753280. Its totient is φ = 74359977048.

The previous prime is 78520801223. The next prime is 78520801243. The reversal of 78520801231 is 13210802587.

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

It is a cyclic number.

It is not a de Polignac number, because 78520801231 - 2³ = 78520801223 is a prime.

It is a super-2 number, since 2×78520801231² (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 (78520811231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730341 + ... + 830926.

It is an arithmetic number, because the mean of its divisors is an integer number (10335594160).

Almost surely, 2^78520801231 is an apocalyptic number.

78520801231 is a deficient number, since it is larger than the sum of its proper divisors (4163952049).

78520801231 is a wasteful number, since it uses less digits than its factorization.

78520801231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563933.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 78520801231 in words is "seventy-eight billion, five hundred twenty million, eight hundred one thousand, two hundred thirty-one".