13631203964 has 36 divisors (see below), whose sum is σ = 28706118840. Its totient is φ = 5640495840.

The previous prime is 13631203961. The next prime is 13631203969. The reversal of 13631203964 is 46930213631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13631203961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1193402 + ... + 1204769.

It is an arithmetic number, because the mean of its divisors is an integer number (797392190).

Almost surely, 2^13631203964 is an apocalyptic number.

13631203964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13631203964 is an abundant number, since it is smaller than the sum of its proper divisors (15074914876).

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

13631203964 is a wasteful number, since it uses less digits than its factorization.

13631203964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398218 (or 2398209 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 13631203964 in words is "thirteen billion, six hundred thirty-one million, two hundred three thousand, nine hundred sixty-four".