12557007242535 has 64 divisors (see below), whose sum is σ = 24877451123712. Its totient is φ = 5277035022336.

The previous prime is 12557007242531. The next prime is 12557007242573. The reversal of 12557007242535 is 53524270075521.

It is a happy number.

It is not a de Polignac number, because 12557007242535 - 2² = 12557007242531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557007242531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81722524 + ... + 81876033.

It is an arithmetic number, because the mean of its divisors is an integer number (388710173808).

Almost surely, 2^{12557007242535} is an apocalyptic number.

12557007242535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12557007242535 is a deficient number, since it is larger than the sum of its proper divisors (12320443881177).

12557007242535 is a wasteful number, since it uses less digits than its factorization.

12557007242535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163598632.

The product of its (nonzero) digits is 2940000, while the sum is 48.

The spelling of 12557007242535 in words is "twelve trillion, five hundred fifty-seven billion, seven million, two hundred forty-two thousand, five hundred thirty-five".