16670824402 has 4 divisors (see below), whose sum is σ = 25006236606. Its totient is φ = 8335412200.

The previous prime is 16670824351. The next prime is 16670824403. The reversal of 16670824402 is 20442807661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20442807661 = 34519 ⋅592219.

It can be written as a sum of positive squares in only one way, i.e., 16488871281 + 181953121 = 128409^2 + 13489^2 .

It is not an unprimeable number, because it can be changed into a prime (16670824403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4167706099 + ... + 4167706102.

Almost surely, 2^16670824402 is an apocalyptic number.

16670824402 is a deficient number, since it is larger than the sum of its proper divisors (8335412204).

16670824402 is an equidigital number, since it uses as much as digits as its factorization.

16670824402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335412203.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 16670824402 in words is "sixteen billion, six hundred seventy million, eight hundred twenty-four thousand, four hundred two".