1364878513649 has 16 divisors (see below), whose sum is σ = 1602067543296. Its totient is φ = 1138242974400.

The previous prime is 1364878513639. The next prime is 1364878513667. The reversal of 1364878513649 is 9463158784631.

It is not a de Polignac number, because 1364878513649 - 2²⁰ = 1364877465073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1364878513639) 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, 12372164 + ... + 12481994.

It is an arithmetic number, because the mean of its divisors is an integer number (100129221456).

Almost surely, 2^{1364878513649} is an apocalyptic number.

It is an amenable number.

1364878513649 is a deficient number, since it is larger than the sum of its proper divisors (237189029647).

1364878513649 is a wasteful number, since it uses less digits than its factorization.

1364878513649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157856.

The product of its digits is 104509440, while the sum is 65.

The spelling of 1364878513649 in words is "one trillion, three hundred sixty-four billion, eight hundred seventy-eight million, five hundred thirteen thousand, six hundred forty-nine".