16256720434 has 8 divisors (see below), whose sum is σ = 24385858560. Its totient is φ = 8128100916.

The previous prime is 16256720419. The next prime is 16256720449. The reversal of 16256720434 is 43402765261.

It is an interprime number because it is at equal distance from previous prime (16256720419) and next prime (16256720449).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38454 + ... + 184369.

It is an arithmetic number, because the mean of its divisors is an integer number (3048232320).

Almost surely, 2^16256720434 is an apocalyptic number.

16256720434 is a deficient number, since it is larger than the sum of its proper divisors (8129138126).

16256720434 is a wasteful number, since it uses less digits than its factorization.

16256720434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259304.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 16256720434 in words is "sixteen billion, two hundred fifty-six million, seven hundred twenty thousand, four hundred thirty-four".