78102023311 has 8 divisors (see below), whose sum is σ = 84112368704. Its totient is φ = 72092034720.

The previous prime is 78102023309. The next prime is 78102023327. The reversal of 78102023311 is 11332020187.

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 78102023311 - 2¹ = 78102023309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78102023311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78102023341) 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, 519130 + ... + 652456.

It is an arithmetic number, because the mean of its divisors is an integer number (10514046088).

Almost surely, 2^78102023311 is an apocalyptic number.

78102023311 is a deficient number, since it is larger than the sum of its proper divisors (6010345393).

78102023311 is a wasteful number, since it uses less digits than its factorization.

78102023311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178401.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 78102023311 its reverse (11332020187), we get a palindrome (89434043498).

The spelling of 78102023311 in words is "seventy-eight billion, one hundred two million, twenty-three thousand, three hundred eleven".