126540625585 has 32 divisors (see below), whose sum is σ = 169859306880. Its totient is φ = 89719526400.

The previous prime is 126540625543. The next prime is 126540625703. The reversal of 126540625585 is 585526045621.

It is not a de Polignac number, because 126540625585 - 2²³ = 126532236977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212226 + ... + 546004.

It is an arithmetic number, because the mean of its divisors is an integer number (5308103340).

Almost surely, 2^126540625585 is an apocalyptic number.

It is an amenable number.

126540625585 is a deficient number, since it is larger than the sum of its proper divisors (43318681295).

126540625585 is a wasteful number, since it uses less digits than its factorization.

126540625585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333969.

The product of its (nonzero) digits is 2880000, while the sum is 49.

The spelling of 126540625585 in words is "one hundred twenty-six billion, five hundred forty million, six hundred twenty-five thousand, five hundred eighty-five".