16429772372 has 30 divisors (see below), whose sum is σ = 31148242818. Its totient is φ = 7582919136.

The previous prime is 16429772353. The next prime is 16429772377. The reversal of 16429772372 is 27327792461.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 12831452176 + 3598320196 = 113276^2 + 59986^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16429772372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16429772377) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42338 + ... + 186150.

Almost surely, 2^16429772372 is an apocalyptic number.

It is an amenable number.

16429772372 is a deficient number, since it is larger than the sum of its proper divisors (14718470446).

16429772372 is an equidigital number, since it uses as much as digits as its factorization.

16429772372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143869 (or 143828 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 50.

The spelling of 16429772372 in words is "sixteen billion, four hundred twenty-nine million, seven hundred seventy-two thousand, three hundred seventy-two".