20369856290 has 16 divisors (see below), whose sum is σ = 41903704512. Its totient is φ = 6983950704.

The previous prime is 20369856289. The next prime is 20369856293. The reversal of 20369856290 is 9265896302.

It is not an unprimeable number, because it can be changed into a prime (20369856293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145498904 + ... + 145499043.

It is an arithmetic number, because the mean of its divisors is an integer number (2618981532).

Almost surely, 2^20369856290 is an apocalyptic number.

20369856290 is an abundant number, since it is smaller than the sum of its proper divisors (21533848222).

20369856290 is a wasteful number, since it uses less digits than its factorization.

20369856290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290997961.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 20369856290 in words is "twenty billion, three hundred sixty-nine million, eight hundred fifty-six thousand, two hundred ninety".