20351883387 has 32 divisors (see below), whose sum is σ = 31478803200. Its totient is φ = 11559019520.

The previous prime is 20351883317. The next prime is 20351883437. The reversal of 20351883387 is 78338815302.

It is a cyclic number.

It is not a de Polignac number, because 20351883387 - 2⁷ = 20351883259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20351883317) 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 31 ways as a sum of consecutive naturals, for example, 52864 + ... + 208562.

It is an arithmetic number, because the mean of its divisors is an integer number (983712600).

Almost surely, 2^20351883387 is an apocalyptic number.

20351883387 is a deficient number, since it is larger than the sum of its proper divisors (11126919813).

20351883387 is a wasteful number, since it uses less digits than its factorization.

20351883387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155963.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 20351883387 in words is "twenty billion, three hundred fifty-one million, eight hundred eighty-three thousand, three hundred eighty-seven".