1361777575427 has 4 divisors (see below), whose sum is σ = 1374998717040. Its totient is φ = 1348556433816.

The previous prime is 1361777575423. The next prime is 1361777575447. The reversal of 1361777575427 is 7245757771631.

It is a happy number.

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 1361777575427 - 2² = 1361777575423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361777575427.

It is not an unprimeable number, because it can be changed into a prime (1361777575423) 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, 6610570652 + ... + 6610570857.

It is an arithmetic number, because the mean of its divisors is an integer number (343749679260).

Almost surely, 2^{1361777575427} is an apocalyptic number.

1361777575427 is a deficient number, since it is larger than the sum of its proper divisors (13221141613).

1361777575427 is a wasteful number, since it uses less digits than its factorization.

1361777575427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13221141612.

The product of its digits is 60505200, while the sum is 62.

The spelling of 1361777575427 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-seven million, five hundred seventy-five thousand, four hundred twenty-seven".