387545578061 has 4 divisors (see below), whose sum is σ = 387644774592. Its totient is φ = 387446381532.

The previous prime is 387545578039. The next prime is 387545578099. The reversal of 387545578061 is 160875545783.

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 a de Polignac number, because none of the positive numbers 2^k-387545578061 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 (387545578361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49592405 + ... + 49600218.

It is an arithmetic number, because the mean of its divisors is an integer number (96911193648).

Almost surely, 2^387545578061 is an apocalyptic number.

It is an amenable number.

387545578061 is a deficient number, since it is larger than the sum of its proper divisors (99196531).

387545578061 is an equidigital number, since it uses as much as digits as its factorization.

387545578061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99196530.

The product of its (nonzero) digits is 28224000, while the sum is 59.

The spelling of 387545578061 in words is "three hundred eighty-seven billion, five hundred forty-five million, five hundred seventy-eight thousand, sixty-one".