16447056437 has 24 divisors (see below), whose sum is σ = 19641131136. Its totient is φ = 13725669888.

The previous prime is 16447056427. The next prime is 16447056511. The reversal of 16447056437 is 73465074461.

It is not a de Polignac number, because 16447056437 - 2¹⁸ = 16446794293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16447056391 and 16447056400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16447056427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425978 + ... + 462980.

It is an arithmetic number, because the mean of its divisors is an integer number (818380464).

Almost surely, 2^16447056437 is an apocalyptic number.

It is an amenable number.

16447056437 is a deficient number, since it is larger than the sum of its proper divisors (3194074699).

16447056437 is a wasteful number, since it uses less digits than its factorization.

16447056437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37257 (or 37250 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 16447056437 in words is "sixteen billion, four hundred forty-seven million, fifty-six thousand, four hundred thirty-seven".