14406192978 has 32 divisors (see below), whose sum is σ = 29309463360. Its totient is φ = 4719351360.

The previous prime is 14406192973. The next prime is 14406193003. The reversal of 14406192978 is 87929160441.

It is a super-2 number, since 2×14406192978² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14406192978.

It is not an unprimeable number, because it can be changed into a prime (14406192973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433801 + ... + 465827.

It is an arithmetic number, because the mean of its divisors is an integer number (915920730).

Almost surely, 2^14406192978 is an apocalyptic number.

14406192978 is an abundant number, since it is smaller than the sum of its proper divisors (14903270382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14406192978 is a wasteful number, since it uses less digits than its factorization.

14406192978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33322.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 14406192978 in words is "fourteen billion, four hundred six million, one hundred ninety-two thousand, nine hundred seventy-eight".