16245012643 has 4 divisors (see below), whose sum is σ = 17200601640. Its totient is φ = 15289423648.

The previous prime is 16245012577. The next prime is 16245012653. The reversal of 16245012643 is 34621054261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34621054261 = 313 ⋅110610397.

It is a cyclic number.

It is not a de Polignac number, because 16245012643 - 2³³ = 7655078051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16245012599 and 16245012608.

It is not an unprimeable number, because it can be changed into a prime (16245012653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477794473 + ... + 477794506.

It is an arithmetic number, because the mean of its divisors is an integer number (4300150410).

Almost surely, 2^16245012643 is an apocalyptic number.

16245012643 is a deficient number, since it is larger than the sum of its proper divisors (955588997).

16245012643 is an equidigital number, since it uses as much as digits as its factorization.

16245012643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955588996.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 16245012643 in words is "sixteen billion, two hundred forty-five million, twelve thousand, six hundred forty-three".