16349378617 has 16 divisors (see below), whose sum is σ = 19387190592. Its totient is φ = 13591523520.

The previous prime is 16349378597. The next prime is 16349378621. The reversal of 16349378617 is 71687394361.

It is a cyclic number.

It is not a de Polignac number, because 16349378617 - 2¹¹ = 16349376569 is a prime.

It is a super-3 number, since 3×16349378617³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16349378117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518958 + ... + 549559.

It is an arithmetic number, because the mean of its divisors is an integer number (1211699412).

Almost surely, 2^16349378617 is an apocalyptic number.

It is an amenable number.

16349378617 is a deficient number, since it is larger than the sum of its proper divisors (3037811975).

16349378617 is a wasteful number, since it uses less digits than its factorization.

16349378617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068648.

The product of its digits is 4572288, while the sum is 55.

The spelling of 16349378617 in words is "sixteen billion, three hundred forty-nine million, three hundred seventy-eight thousand, six hundred seventeen".