1299387387386 has 64 divisors (see below), whose sum is σ = 2219912697600. Its totient is φ = 565014912000.

The previous prime is 1299387387373. The next prime is 1299387387407. The reversal of 1299387387386 is 6837837839921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37458146 + ... + 37492818.

It is an arithmetic number, because the mean of its divisors is an integer number (34686135900).

Almost surely, 2^{1299387387386} is an apocalyptic number.

1299387387386 is a deficient number, since it is larger than the sum of its proper divisors (920525310214).

1299387387386 is a wasteful number, since it uses less digits than its factorization.

1299387387386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35255.

The product of its digits is 658409472, while the sum is 74.

The spelling of 1299387387386 in words is "one trillion, two hundred ninety-nine billion, three hundred eighty-seven million, three hundred eighty-seven thousand, three hundred eighty-six".