16783378472 has 48 divisors (see below), whose sum is σ = 37206764820. Its totient is φ = 7074950400.

The previous prime is 16783378463. The next prime is 16783378511. The reversal of 16783378472 is 27487338761.

It can be written as a sum of positive squares in 2 ways, for example, as 13538253316 + 3245125156 = 116354^2 + 56966^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327029 + ... + 374852.

Almost surely, 2^16783378472 is an apocalyptic number.

It is an amenable number.

16783378472 is an abundant number, since it is smaller than the sum of its proper divisors (20423386348).

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

16783378472 is a wasteful number, since it uses less digits than its factorization.

16783378472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701962 (or 701951 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 56.

The spelling of 16783378472 in words is "sixteen billion, seven hundred eighty-three million, three hundred seventy-eight thousand, four hundred seventy-two".