18626630783512 has 32 divisors (see below), whose sum is σ = 36980176622400. Its totient is φ = 8765275124224.

The previous prime is 18626630783491. The next prime is 18626630783513. The reversal of 18626630783512 is 21538703662681.

It is a happy number.

It is a super-2 number, since 2×18626630783512² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18626630783513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4577658 + ... + 7629430.

It is an arithmetic number, because the mean of its divisors is an integer number (1155630519450).

Almost surely, 2^{18626630783512} is an apocalyptic number.

It is an amenable number.

18626630783512 is a deficient number, since it is larger than the sum of its proper divisors (18353545838888).

18626630783512 is a wasteful number, since it uses less digits than its factorization.

18626630783512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096675 (or 3096671 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 18626630783512 in words is "eighteen trillion, six hundred twenty-six billion, six hundred thirty million, seven hundred eighty-three thousand, five hundred twelve".