811387001397 has 32 divisors (see below), whose sum is σ = 1309300457472. Its totient is φ = 436318919424.

The previous prime is 811387001303. The next prime is 811387001413. The reversal of 811387001397 is 793100783118.

It is not a de Polignac number, because 811387001397 - 2⁸ = 811387001141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811387001497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2647548 + ... + 2938074.

It is an arithmetic number, because the mean of its divisors is an integer number (40915639296).

Almost surely, 2^811387001397 is an apocalyptic number.

It is an amenable number.

811387001397 is a deficient number, since it is larger than the sum of its proper divisors (497913456075).

811387001397 is a wasteful number, since it uses less digits than its factorization.

811387001397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298377.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 811387001397 in words is "eight hundred eleven billion, three hundred eighty-seven million, one thousand, three hundred ninety-seven".