16400243124 has 24 divisors (see below), whose sum is σ = 42519149120. Its totient is φ = 5466747672.

The previous prime is 16400243107. The next prime is 16400243141. The reversal of 16400243124 is 42134200461.

It is a happy number.

16400243124 is a `hidden beast` number, since 1 + 6 + 400 + 243 + 12 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (16400243107) and next prime (16400243141).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75926944 + ... + 75927159.

Almost surely, 2^16400243124 is an apocalyptic number.

It is an amenable number.

16400243124 is an abundant number, since it is smaller than the sum of its proper divisors (26118905996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16400243124 is a wasteful number, since it uses less digits than its factorization.

16400243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151854116 (or 151854108 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 16400243124 its reverse (42134200461), we get a palindrome (58534443585).

The spelling of 16400243124 in words is "sixteen billion, four hundred million, two hundred forty-three thousand, one hundred twenty-four".