387100128997 has 4 divisors (see below), whose sum is σ = 387102212640. Its totient is φ = 387098045356.

The previous prime is 387100128953. The next prime is 387100129037. The reversal of 387100128997 is 799821001783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 387100128997 - 2⁷ = 387100128869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387100168997) 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, 732547 + ... + 1144912.

It is an arithmetic number, because the mean of its divisors is an integer number (96775553160).

Almost surely, 2^387100128997 is an apocalyptic number.

It is an amenable number.

387100128997 is a deficient number, since it is larger than the sum of its proper divisors (2083643).

387100128997 is a wasteful number, since it uses less digits than its factorization.

387100128997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083642.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 387100128997 in words is "three hundred eighty-seven billion, one hundred million, one hundred twenty-eight thousand, nine hundred ninety-seven".