16449457942 has 4 divisors (see below), whose sum is σ = 24674186916. Its totient is φ = 8224728970.

The previous prime is 16449457901. The next prime is 16449457967. The reversal of 16449457942 is 24975494461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24975494461 = 17 ⋅1469146733.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112364484 + ... + 4112364487.

It is an arithmetic number, because the mean of its divisors is an integer number (6168546729).

Almost surely, 2^16449457942 is an apocalyptic number.

16449457942 is a deficient number, since it is larger than the sum of its proper divisors (8224728974).

16449457942 is an equidigital number, since it uses as much as digits as its factorization.

16449457942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8224728973.

The product of its digits is 8709120, while the sum is 55.

The spelling of 16449457942 in words is "sixteen billion, four hundred forty-nine million, four hundred fifty-seven thousand, nine hundred forty-two".