13149227820 has 48 divisors (see below), whose sum is σ = 36882413568. Its totient is φ = 3500310720.

The previous prime is 13149227803. The next prime is 13149227843. The reversal of 13149227820 is 2872294131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157644 + ... + 226163.

It is an arithmetic number, because the mean of its divisors is an integer number (768383616).

Almost surely, 2^13149227820 is an apocalyptic number.

13149227820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13149227820 is an abundant number, since it is smaller than the sum of its proper divisors (23733185748).

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

13149227820 is a wasteful number, since it uses less digits than its factorization.

13149227820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384390 (or 384388 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 13149227820 in words is "thirteen billion, one hundred forty-nine million, two hundred twenty-seven thousand, eight hundred twenty".