16290939691 has 8 divisors (see below), whose sum is σ = 17594653104. Its totient is φ = 14994449760.

The previous prime is 16290939683. The next prime is 16290939697. The reversal of 16290939691 is 19693909261.

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 16290939691 - 2³ = 16290939683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16290939697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801180 + ... + 1810201.

It is an arithmetic number, because the mean of its divisors is an integer number (2199331638).

Almost surely, 2^16290939691 is an apocalyptic number.

16290939691 is a deficient number, since it is larger than the sum of its proper divisors (1303713413).

16290939691 is a wasteful number, since it uses less digits than its factorization.

16290939691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611741.

The product of its (nonzero) digits is 1417176, while the sum is 55.

The spelling of 16290939691 in words is "sixteen billion, two hundred ninety million, nine hundred thirty-nine thousand, six hundred ninety-one".