1388609252211 has 4 divisors (see below), whose sum is σ = 1851479002952. Its totient is φ = 925739501472.

The previous prime is 1388609252207. The next prime is 1388609252269. The reversal of 1388609252211 is 1122529068831.

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

It is not a de Polignac number, because 1388609252211 - 2² = 1388609252207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388609252011) 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, 231434875366 + ... + 231434875371.

It is an arithmetic number, because the mean of its divisors is an integer number (462869750738).

Almost surely, 2^{1388609252211} is an apocalyptic number.

1388609252211 is a deficient number, since it is larger than the sum of its proper divisors (462869750741).

1388609252211 is an equidigital number, since it uses as much as digits as its factorization.

1388609252211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462869750740.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 1388609252211 in words is "one trillion, three hundred eighty-eight billion, six hundred nine million, two hundred fifty-two thousand, two hundred eleven".