387974670515 has 16 divisors (see below), whose sum is σ = 467663861280. Its totient is φ = 308983921920.

The previous prime is 387974670491. The next prime is 387974670521. The reversal of 387974670515 is 515076479783.

It is a happy number.

It is not a de Polignac number, because 387974670515 - 2¹² = 387974666419 is a prime.

It is a super-2 number, since 2×387974670515² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11216327 + ... + 11250863.

It is an arithmetic number, because the mean of its divisors is an integer number (29228991330).

Almost surely, 2^387974670515 is an apocalyptic number.

387974670515 is a deficient number, since it is larger than the sum of its proper divisors (79689190765).

387974670515 is a wasteful number, since it uses less digits than its factorization.

387974670515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44582.

The product of its (nonzero) digits is 44452800, while the sum is 62.

The spelling of 387974670515 in words is "three hundred eighty-seven billion, nine hundred seventy-four million, six hundred seventy thousand, five hundred fifteen".