20203155519 has 16 divisors (see below), whose sum is σ = 27003663360. Its totient is φ = 13435747200.

The previous prime is 20203155509. The next prime is 20203155529. The reversal of 20203155519 is 91555130202.

It is an interprime number because it is at equal distance from previous prime (20203155509) and next prime (20203155529).

It is not a de Polignac number, because 20203155519 - 2⁸ = 20203155263 is a prime.

It is a super-2 number, since 2×20203155519² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20203155519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203155509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2707744 + ... + 2715194.

It is an arithmetic number, because the mean of its divisors is an integer number (1687728960).

Almost surely, 2^20203155519 is an apocalyptic number.

20203155519 is a deficient number, since it is larger than the sum of its proper divisors (6800507841).

20203155519 is a wasteful number, since it uses less digits than its factorization.

20203155519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9550.

The product of its (nonzero) digits is 13500, while the sum is 33.

The spelling of 20203155519 in words is "twenty billion, two hundred three million, one hundred fifty-five thousand, five hundred nineteen".