12454455445421 has 8 divisors (see below), whose sum is σ = 13586954011488. Its totient is φ = 11322002770000.

The previous prime is 12454455445409. The next prime is 12454455445429.

12454455445421 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12454455445421 is a prime.

It is a super-2 number, since 2×12454455445421² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12454455445421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12454455445429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10903970 + ... + 11991891.

It is an arithmetic number, because the mean of its divisors is an integer number (1698369251436).

Almost surely, 2^{12454455445421} is an apocalyptic number.

12454455445421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12454455445421 is a deficient number, since it is larger than the sum of its proper divisors (1132498566067).

12454455445421 is a wasteful number, since it uses less digits than its factorization.

12454455445421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22945323.

The product of its digits is 10240000, while the sum is 50.

The spelling of 12454455445421 in words is "twelve trillion, four hundred fifty-four billion, four hundred fifty-five million, four hundred forty-five thousand, four hundred twenty-one".