12811902990 has 32 divisors (see below), whose sum is σ = 30762473760. Its totient is φ = 3414962304.

The previous prime is 12811902989. The next prime is 12811902997. The reversal of 12811902990 is 9920911821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811902997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28345 + ... + 162564.

It is an arithmetic number, because the mean of its divisors is an integer number (961327305).

Almost surely, 2^12811902990 is an apocalyptic number.

12811902990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12811902990 is an abundant number, since it is smaller than the sum of its proper divisors (17950570770).

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

12811902990 is a wasteful number, since it uses less digits than its factorization.

12811902990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193156.

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 12811902990 in words is "twelve billion, eight hundred eleven million, nine hundred two thousand, nine hundred ninety".