20156030365 has 32 divisors (see below), whose sum is σ = 26014663296. Its totient is φ = 14937384960.

The previous prime is 20156030359. The next prime is 20156030383. The reversal of 20156030365 is 56303065102.

It is not a de Polignac number, because 20156030365 - 2¹¹ = 20156028317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3242110 + ... + 3248320.

It is an arithmetic number, because the mean of its divisors is an integer number (812958228).

Almost surely, 2^20156030365 is an apocalyptic number.

It is an amenable number.

20156030365 is a deficient number, since it is larger than the sum of its proper divisors (5858632931).

20156030365 is a wasteful number, since it uses less digits than its factorization.

20156030365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 20156030365 its reverse (56303065102), we get a palindrome (76459095467).

The spelling of 20156030365 in words is "twenty billion, one hundred fifty-six million, thirty thousand, three hundred sixty-five".