1542845767679 has 4 divisors (see below), whose sum is σ = 1542975071976. Its totient is φ = 1542716463384.

The previous prime is 1542845767667. The next prime is 1542845767693. The reversal of 1542845767679 is 9767675482451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1542845767679 - 2²⁴ = 1542828990463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542845767699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64634249 + ... + 64658114.

It is an arithmetic number, because the mean of its divisors is an integer number (385743767994).

Almost surely, 2^{1542845767679} is an apocalyptic number.

1542845767679 is a deficient number, since it is larger than the sum of its proper divisors (129304297).

1542845767679 is a wasteful number, since it uses less digits than its factorization.

1542845767679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129304296.

The product of its digits is 711244800, while the sum is 71.

The spelling of 1542845767679 in words is "one trillion, five hundred forty-two billion, eight hundred forty-five million, seven hundred sixty-seven thousand, six hundred seventy-nine".