13406201557 has 8 divisors (see below), whose sum is σ = 15647360256. Its totient is φ = 11246539632.

The previous prime is 13406201539. The next prime is 13406201561. The reversal of 13406201557 is 75510260431.

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 13406201557 - 2²³ = 13397812949 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 (13406201597) 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, 20373838 + ... + 20374495.

It is an arithmetic number, because the mean of its divisors is an integer number (1955920032).

Almost surely, 2^13406201557 is an apocalyptic number.

It is an amenable number.

13406201557 is a deficient number, since it is larger than the sum of its proper divisors (2241158699).

13406201557 is an equidigital number, since it uses as much as digits as its factorization.

13406201557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40748387.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 13406201557 its reverse (75510260431), we get a palindrome (88916461988).

The spelling of 13406201557 in words is "thirteen billion, four hundred six million, two hundred one thousand, five hundred fifty-seven".