16516340402 has 4 divisors (see below), whose sum is σ = 24774510606. Its totient is φ = 8258170200.

The previous prime is 16516340389. The next prime is 16516340471. The reversal of 16516340402 is 20404361561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16141956601 + 374383801 = 127051^2 + 19349^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4129085099 + ... + 4129085102.

Almost surely, 2^16516340402 is an apocalyptic number.

16516340402 is a deficient number, since it is larger than the sum of its proper divisors (8258170204).

16516340402 is an equidigital number, since it uses as much as digits as its factorization.

16516340402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258170203.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 16516340402 in words is "sixteen billion, five hundred sixteen million, three hundred forty thousand, four hundred two".