16387493801 has 12 divisors (see below), whose sum is σ = 19506331152. Its totient is φ = 13719760488.

The previous prime is 16387493789. The next prime is 16387493851. The reversal of 16387493801 is 10839478361.

It is not a de Polignac number, because 16387493801 - 2²⁶ = 16320384937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16387493801.

It is not an unprimeable number, because it can be changed into a prime (16387493851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3886715 + ... + 3890928.

It is an arithmetic number, because the mean of its divisors is an integer number (1625527596).

Almost surely, 2^16387493801 is an apocalyptic number.

It is an amenable number.

16387493801 is a deficient number, since it is larger than the sum of its proper divisors (3118837351).

16387493801 is an equidigital number, since it uses as much as digits as its factorization.

16387493801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7777700 (or 7777693 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 16387493801 in words is "sixteen billion, three hundred eighty-seven million, four hundred ninety-three thousand, eight hundred one".