20103187479 has 16 divisors (see below), whose sum is σ = 27116213760. Its totient is φ = 13246263360.

The previous prime is 20103187457. The next prime is 20103187487. The reversal of 20103187479 is 97478130102.

It is not a de Polignac number, because 20103187479 - 2²⁵ = 20069633047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20103187479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103187409) 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, 725184 + ... + 752394.

It is an arithmetic number, because the mean of its divisors is an integer number (1694763360).

Almost surely, 2^20103187479 is an apocalyptic number.

20103187479 is a deficient number, since it is larger than the sum of its proper divisors (7013026281).

20103187479 is a wasteful number, since it uses less digits than its factorization.

20103187479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30070.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 20103187479 in words is "twenty billion, one hundred three million, one hundred eighty-seven thousand, four hundred seventy-nine".