16401887537 has 8 divisors (see below), whose sum is σ = 18746299200. Its totient is φ = 14057797104.

The previous prime is 16401887501. The next prime is 16401887539. The reversal of 16401887537 is 73578810461.

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

It is a cyclic number.

It is not a de Polignac number, because 16401887537 - 2⁶ = 16401887473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16401887539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41414 + ... + 185792.

It is an arithmetic number, because the mean of its divisors is an integer number (2343287400).

Almost surely, 2^16401887537 is an apocalyptic number.

It is an amenable number.

16401887537 is a deficient number, since it is larger than the sum of its proper divisors (2344411663).

16401887537 is a wasteful number, since it uses less digits than its factorization.

16401887537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160615.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 16401887537 in words is "sixteen billion, four hundred one million, eight hundred eighty-seven thousand, five hundred thirty-seven".