20165236807 has 8 divisors (see below), whose sum is σ = 21353673600. Its totient is φ = 18989510904.

The previous prime is 20165236801. The next prime is 20165236813. The reversal of 20165236807 is 70863256102.

It is an interprime number because it is at equal distance from previous prime (20165236801) and next prime (20165236813).

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 20165236807 - 2¹⁵ = 20165204039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20165236807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165236801) 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, 3174457 + ... + 3180802.

It is an arithmetic number, because the mean of its divisors is an integer number (2669209200).

Almost surely, 2^20165236807 is an apocalyptic number.

20165236807 is a deficient number, since it is larger than the sum of its proper divisors (1188436793).

20165236807 is a wasteful number, since it uses less digits than its factorization.

20165236807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355445.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 20165236807 in words is "twenty billion, one hundred sixty-five million, two hundred thirty-six thousand, eight hundred seven".