16378890415 has 8 divisors (see below), whose sum is σ = 19687052160. Its totient is φ = 13081523232.

The previous prime is 16378890401. The next prime is 16378890427. The reversal of 16378890415 is 51409887361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16378890415 - 2²¹ = 16376793263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695300 + ... + 2701369.

It is an arithmetic number, because the mean of its divisors is an integer number (2460881520).

Almost surely, 2^16378890415 is an apocalyptic number.

16378890415 is a deficient number, since it is larger than the sum of its proper divisors (3308161745).

16378890415 is an equidigital number, since it uses as much as digits as its factorization.

16378890415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397281.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 16378890415 in words is "sixteen billion, three hundred seventy-eight million, eight hundred ninety thousand, four hundred fifteen".