12381738501 has 32 divisors (see below), whose sum is σ = 18444096000. Its totient is φ = 7323422400.

The previous prime is 12381738451. The next prime is 12381738583. The reversal of 12381738501 is 10583718321.

It is not a de Polignac number, because 12381738501 - 2⁶ = 12381738437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12381738501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381738001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2124171 + ... + 2129991.

It is an arithmetic number, because the mean of its divisors is an integer number (576378000).

Almost surely, 2^12381738501 is an apocalyptic number.

12381738501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12381738501 is a deficient number, since it is larger than the sum of its proper divisors (6062357499).

12381738501 is a wasteful number, since it uses less digits than its factorization.

12381738501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 12381738501 in words is "twelve billion, three hundred eighty-one million, seven hundred thirty-eight thousand, five hundred one".