1342644541021 has 16 divisors (see below), whose sum is σ = 1624135327360. Its totient is φ = 1084244149440.

The previous prime is 1342644541013. The next prime is 1342644541027. The reversal of 1342644541021 is 1201454462431.

It is a cyclic number.

It is not a de Polignac number, because 1342644541021 - 2³ = 1342644541013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342644541027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27862866 + ... + 27911011.

It is an arithmetic number, because the mean of its divisors is an integer number (101508457960).

Almost surely, 2^{1342644541021} is an apocalyptic number.

It is an amenable number.

1342644541021 is a deficient number, since it is larger than the sum of its proper divisors (281490786339).

1342644541021 is a wasteful number, since it uses less digits than its factorization.

1342644541021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55774084.

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 1342644541021 in words is "one trillion, three hundred forty-two billion, six hundred forty-four million, five hundred forty-one thousand, twenty-one".