655040609385 has 32 divisors (see below), whose sum is σ = 1093685448960. Its totient is φ = 334149623808.

The previous prime is 655040609359. The next prime is 655040609387. The reversal of 655040609385 is 583906040556.

655040609385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655040609385 - 2⁷ = 655040609257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655040609387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11137977 + ... + 11196633.

It is an arithmetic number, because the mean of its divisors is an integer number (34177670280).

Almost surely, 2^655040609385 is an apocalyptic number.

It is an amenable number.

655040609385 is a deficient number, since it is larger than the sum of its proper divisors (438644839575).

655040609385 is a wasteful number, since it uses less digits than its factorization.

655040609385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91057.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 655040609385 in words is "six hundred fifty-five billion, forty million, six hundred nine thousand, three hundred eighty-five".