16423057990 has 64 divisors (see below), whose sum is σ = 30795448320. Its totient is φ = 6301152000.

The previous prime is 16423057979. The next prime is 16423057993. The reversal of 16423057990 is 9975032461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16423057990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16423057993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8776755 + ... + 8778625.

It is an arithmetic number, because the mean of its divisors is an integer number (481178880).

Almost surely, 2^16423057990 is an apocalyptic number.

16423057990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16423057990 is a deficient number, since it is larger than the sum of its proper divisors (14372390330).

16423057990 is a wasteful number, since it uses less digits than its factorization.

16423057990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 16423057990 in words is "sixteen billion, four hundred twenty-three million, fifty-seven thousand, nine hundred ninety".