20114643599 has 4 divisors (see below), whose sum is σ = 20390186736. Its totient is φ = 19839100464.

The previous prime is 20114643547. The next prime is 20114643611. The reversal of 20114643599 is 99534641102.

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

It is a cyclic number.

It is not a de Polignac number, because 20114643599 - 2⁸ = 20114643343 is a prime.

It is a super-2 number, since 2×20114643599² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20114643509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137771459 + ... + 137771604.

It is an arithmetic number, because the mean of its divisors is an integer number (5097546684).

Almost surely, 2^20114643599 is an apocalyptic number.

20114643599 is a deficient number, since it is larger than the sum of its proper divisors (275543137).

20114643599 is an equidigital number, since it uses as much as digits as its factorization.

20114643599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275543136.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 20114643599 in words is "twenty billion, one hundred fourteen million, six hundred forty-three thousand, five hundred ninety-nine".