389896764900551 has 4 divisors (see below), whose sum is σ = 391074700746504. Its totient is φ = 388718829054600.

The previous prime is 389896764900497. The next prime is 389896764900607. The reversal of 389896764900551 is 155009467698983.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389896764900551 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 (389896764980551) 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, 588967922480 + ... + 588967923141.

It is an arithmetic number, because the mean of its divisors is an integer number (97768675186626).

Almost surely, 2^{389896764900551} is an apocalyptic number.

389896764900551 is a deficient number, since it is larger than the sum of its proper divisors (1177935845953).

389896764900551 is a wasteful number, since it uses less digits than its factorization.

389896764900551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177935845952.

The product of its (nonzero) digits is 3527193600, while the sum is 80.

The spelling of 389896764900551 in words is "three hundred eighty-nine trillion, eight hundred ninety-six billion, seven hundred sixty-four million, nine hundred thousand, five hundred fifty-one".