12540397801 has 8 divisors (see below), whose sum is σ = 13404795264. Its totient is φ = 11702597280.

The previous prime is 12540397763. The next prime is 12540397811. The reversal of 12540397801 is 10879304521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12540397801 - 2⁷ = 12540397673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12540397811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6648261 + ... + 6650146.

It is an arithmetic number, because the mean of its divisors is an integer number (1675599408).

Almost surely, 2^12540397801 is an apocalyptic number.

It is an amenable number.

12540397801 is a deficient number, since it is larger than the sum of its proper divisors (864397463).

12540397801 is a wasteful number, since it uses less digits than its factorization.

12540397801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13298471.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 12540397801 in words is "twelve billion, five hundred forty million, three hundred ninety-seven thousand, eight hundred one".