13043561990 has 16 divisors (see below), whose sum is σ = 23517101952. Its totient is φ = 5208826944.

The previous prime is 13043561987. The next prime is 13043562067. The reversal of 13043561990 is 9916534031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068359 + ... + 1080498.

It is an arithmetic number, because the mean of its divisors is an integer number (1469818872).

Almost surely, 2^13043561990 is an apocalyptic number.

13043561990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13043561990 is a deficient number, since it is larger than the sum of its proper divisors (10473539962).

13043561990 is a wasteful number, since it uses less digits than its factorization.

13043561990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149471.

The product of its (nonzero) digits is 87480, while the sum is 41.

The spelling of 13043561990 in words is "thirteen billion, forty-three million, five hundred sixty-one thousand, nine hundred ninety".