1421367544438 has 16 divisors (see below), whose sum is σ = 2156061729024. Its totient is φ = 702694114560.

The previous prime is 1421367544417. The next prime is 1421367544459. The reversal of 1421367544438 is 8344457631241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1421367544417) and next prime (1421367544459).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3246870 + ... + 3658537.

It is an arithmetic number, because the mean of its divisors is an integer number (134753858064).

Almost surely, 2^{1421367544438} is an apocalyptic number.

1421367544438 is a deficient number, since it is larger than the sum of its proper divisors (734694184586).

1421367544438 is a wasteful number, since it uses less digits than its factorization.

1421367544438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906567.

The product of its digits is 7741440, while the sum is 52.

The spelling of 1421367544438 in words is "one trillion, four hundred twenty-one billion, three hundred sixty-seven million, five hundred forty-four thousand, four hundred thirty-eight".