123778406060399 has 8 divisors (see below), whose sum is σ = 129451633633152. Its totient is φ = 118129474966360.

The previous prime is 123778406060377. The next prime is 123778406060479. The reversal of 123778406060399 is 993060604877321.

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 123778406060399 - 2¹⁶ = 123778405994863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123778406060999) 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, 6074109257 + ... + 6074129634.

It is an arithmetic number, because the mean of its divisors is an integer number (16181454204144).

Almost surely, 2^{123778406060399} is an apocalyptic number.

123778406060399 is a deficient number, since it is larger than the sum of its proper divisors (5673227572753).

123778406060399 is a wasteful number, since it uses less digits than its factorization.

123778406060399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148239357.

The product of its (nonzero) digits is 82301184, while the sum is 65.

The spelling of 123778406060399 in words is "one hundred twenty-three trillion, seven hundred seventy-eight billion, four hundred six million, sixty thousand, three hundred ninety-nine".