12490771989 has 16 divisors (see below), whose sum is σ = 17485097472. Its totient is φ = 7916257008.

The previous prime is 12490771987. The next prime is 12490772023. The reversal of 12490771989 is 98917709421.

It is not a de Polignac number, because 12490771989 - 2¹ = 12490771987 is a prime.

It is a super-2 number, since 2×12490771989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12490771987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544047 + ... + 566540.

It is an arithmetic number, because the mean of its divisors is an integer number (1092818592).

Almost surely, 2^12490771989 is an apocalyptic number.

It is an amenable number.

12490771989 is a deficient number, since it is larger than the sum of its proper divisors (4994325483).

12490771989 is a wasteful number, since it uses less digits than its factorization.

12490771989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110776.

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 12490771989 in words is "twelve billion, four hundred ninety million, seven hundred seventy-one thousand, nine hundred eighty-nine".