12509967767990 has 64 divisors (see below), whose sum is σ = 29551912957440. Its totient is φ = 3693989111040.

The previous prime is 12509967767989. The next prime is 12509967768037. The reversal of 12509967767990 is 9976776990521.

It is a super-2 number, since 2×12509967767990² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (77).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427530407 + ... + 427559666.

It is an arithmetic number, because the mean of its divisors is an integer number (461748639960).

Almost surely, 2^{12509967767990} is an apocalyptic number.

12509967767990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12509967767990 is an abundant number, since it is smaller than the sum of its proper divisors (17041945189450).

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

12509967767990 is a wasteful number, since it uses less digits than its factorization.

12509967767990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855090117.

The product of its (nonzero) digits is 810152280, while the sum is 77.

The spelling of 12509967767990 in words is "twelve trillion, five hundred nine billion, nine hundred sixty-seven million, seven hundred sixty-seven thousand, nine hundred ninety".