12465788756421 has 128 divisors (see below), whose sum is σ = 22928472870912. Its totient is φ = 5813773056000.

The previous prime is 12465788756383. The next prime is 12465788756441.

12465788756421 is nontrivially palindromic in base 10.

12465788756421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12465788756421 - 2¹³ = 12465788748229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12465788756441) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 303423601 + ... + 303464681.

It is an arithmetic number, because the mean of its divisors is an integer number (179128694304).

Almost surely, 2^{12465788756421} is an apocalyptic number.

12465788756421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12465788756421 is a deficient number, since it is larger than the sum of its proper divisors (10462684114491).

12465788756421 is a wasteful number, since it uses less digits than its factorization.

12465788756421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43883.

The product of its digits is 180633600, while the sum is 66.

The spelling of 12465788756421 in words is "twelve trillion, four hundred sixty-five billion, seven hundred eighty-eight million, seven hundred fifty-six thousand, four hundred twenty-one".