16400977149 has 32 divisors (see below), whose sum is σ = 23572684800. Its totient is φ = 10113554880.

The previous prime is 16400977141. The next prime is 16400977199. The reversal of 16400977149 is 94177900461.

It is not a de Polignac number, because 16400977149 - 2³ = 16400977141 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16400977098 and 16400977107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16400977141) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4338142 + ... + 4341920.

It is an arithmetic number, because the mean of its divisors is an integer number (736646400).

Almost surely, 2^16400977149 is an apocalyptic number.

It is an amenable number.

16400977149 is a deficient number, since it is larger than the sum of its proper divisors (7171707651).

16400977149 is a wasteful number, since it uses less digits than its factorization.

16400977149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5865.

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 16400977149 in words is "sixteen billion, four hundred million, nine hundred seventy-seven thousand, one hundred forty-nine".