16464299919 has 48 divisors (see below), whose sum is σ = 23984492544. Its totient is φ = 10034280000.

The previous prime is 16464299879. The next prime is 16464299933. The reversal of 16464299919 is 91999246461.

It is a de Polignac number, because none of the positive numbers 2^k-16464299919 is a prime.

It is a super-2 number, since 2×16464299919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16464299959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21922794 + ... + 21923544.

It is an arithmetic number, because the mean of its divisors is an integer number (499676928).

Almost surely, 2^16464299919 is an apocalyptic number.

16464299919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16464299919 is a deficient number, since it is larger than the sum of its proper divisors (7520192625).

16464299919 is a wasteful number, since it uses less digits than its factorization.

16464299919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1457 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 60.

The spelling of 16464299919 in words is "sixteen billion, four hundred sixty-four million, two hundred ninety-nine thousand, nine hundred nineteen".