16772432426 has 4 divisors (see below), whose sum is σ = 25158648642. Its totient is φ = 8386216212.

The previous prime is 16772432423. The next prime is 16772432483. The reversal of 16772432426 is 62423427761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62423427761 = 201979 ⋅309059.

It can be written as a sum of positive squares in only one way, i.e., 16318785025 + 453647401 = 127745^2 + 21299^2 .

It is not an unprimeable number, because it can be changed into a prime (16772432423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4193108105 + ... + 4193108108.

Almost surely, 2^16772432426 is an apocalyptic number.

16772432426 is a deficient number, since it is larger than the sum of its proper divisors (8386216216).

16772432426 is an equidigital number, since it uses as much as digits as its factorization.

16772432426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8386216215.

The product of its digits is 677376, while the sum is 44.

The spelling of 16772432426 in words is "sixteen billion, seven hundred seventy-two million, four hundred thirty-two thousand, four hundred twenty-six".