13787205438 has 16 divisors (see below), whose sum is σ = 28319665680. Its totient is φ = 4471526016.

The previous prime is 13787205437. The next prime is 13787205449. The reversal of 13787205438 is 83450278731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13787205431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31052043 + ... + 31052486.

It is an arithmetic number, because the mean of its divisors is an integer number (1769979105).

Almost surely, 2^13787205438 is an apocalyptic number.

13787205438 is an abundant number, since it is smaller than the sum of its proper divisors (14532460242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13787205438 is a wasteful number, since it uses less digits than its factorization.

13787205438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62104571.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 13787205438 in words is "thirteen billion, seven hundred eighty-seven million, two hundred five thousand, four hundred thirty-eight".