13047897620 has 12 divisors (see below), whose sum is σ = 27400585044. Its totient is φ = 5219159040.

The previous prime is 13047897601. The next prime is 13047897637. The reversal of 13047897620 is 2679874031.

It can be written as a sum of positive squares in 2 ways, for example, as 8523720976 + 4524176644 = 92324^2 + 67262^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326197421 + ... + 326197460.

It is an arithmetic number, because the mean of its divisors is an integer number (2283382087).

Almost surely, 2^13047897620 is an apocalyptic number.

13047897620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13047897620 is an abundant number, since it is smaller than the sum of its proper divisors (14352687424).

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

13047897620 is a wasteful number, since it uses less digits than its factorization.

13047897620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652394890 (or 652394888 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 13047897620 in words is "thirteen billion, forty-seven million, eight hundred ninety-seven thousand, six hundred twenty".