16245938691 has 16 divisors (see below), whose sum is σ = 24070021120. Its totient is φ = 10829742120.

The previous prime is 16245938663. The next prime is 16245938713. The reversal of 16245938691 is 19683954261.

16245938691 is a `hidden beast` number, since 1 + 624 + 5 + 9 + 3 + 8 + 6 + 9 + 1 = 666.

It is not a de Polignac number, because 16245938691 - 2⁷ = 16245938563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16245930691) 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, 625086 + ... + 650556.

It is an arithmetic number, because the mean of its divisors is an integer number (1504376320).

Almost surely, 2^16245938691 is an apocalyptic number.

16245938691 is a deficient number, since it is larger than the sum of its proper divisors (7824082429).

16245938691 is a wasteful number, since it uses less digits than its factorization.

16245938691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49103 (or 49097 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

It can be divided in two parts, 1624593 and 8691, that added together give a square (1633284 = 1278²).

The spelling of 16245938691 in words is "sixteen billion, two hundred forty-five million, nine hundred thirty-eight thousand, six hundred ninety-one".