53686670387 has 16 divisors (see below), whose sum is σ = 63343890432. Its totient is φ = 44526771360.

The previous prime is 53686670333. The next prime is 53686670473. The reversal of 53686670387 is 78307668635.

It is a cyclic number.

It is not a de Polignac number, because 53686670387 - 2⁸ = 53686670131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53686070387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2473193 + ... + 2494805.

It is an arithmetic number, because the mean of its divisors is an integer number (3958993152).

Almost surely, 2^53686670387 is an apocalyptic number.

53686670387 is a deficient number, since it is larger than the sum of its proper divisors (9657220045).

53686670387 is a wasteful number, since it uses less digits than its factorization.

53686670387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33098.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 53686670387 in words is "fifty-three billion, six hundred eighty-six million, six hundred seventy thousand, three hundred eighty-seven".