387278764697 has 4 divisors (see below), whose sum is σ = 422485925136. Its totient is φ = 352071604260.

The previous prime is 387278764567. The next prime is 387278764729. The reversal of 387278764697 is 796467872783.

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 387278764697 - 2¹⁰ = 387278763673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387278764097) 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, 17603580203 + ... + 17603580224.

It is an arithmetic number, because the mean of its divisors is an integer number (105621481284).

Almost surely, 2^387278764697 is an apocalyptic number.

It is an amenable number.

387278764697 is a deficient number, since it is larger than the sum of its proper divisors (35207160439).

387278764697 is a wasteful number, since it uses less digits than its factorization.

387278764697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35207160438.

The product of its digits is 1194891264, while the sum is 74.

The spelling of 387278764697 in words is "three hundred eighty-seven billion, two hundred seventy-eight million, seven hundred sixty-four thousand, six hundred ninety-seven".