1299387387387 has 8 divisors (see below), whose sum is σ = 1732528363536. Its totient is φ = 866252334752.

The previous prime is 1299387387373. The next prime is 1299387387407. The reversal of 1299387387387 is 7837837839921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1299387387387 - 2²² = 1299383193083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1299387387367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940908 + ... + 1866569.

It is an arithmetic number, because the mean of its divisors is an integer number (216566045442).

Almost surely, 2^{1299387387387} is an apocalyptic number.

1299387387387 is a deficient number, since it is larger than the sum of its proper divisors (433140976149).

1299387387387 is a wasteful number, since it uses less digits than its factorization.

1299387387387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961757.

The product of its digits is 768144384, while the sum is 75.

The spelling of 1299387387387 in words is "one trillion, two hundred ninety-nine billion, three hundred eighty-seven million, three hundred eighty-seven thousand, three hundred eighty-seven".