13215747461 has 8 divisors (see below), whose sum is σ = 15109057920. Its totient is φ = 11323773648.

The previous prime is 13215747439. The next prime is 13215747481. The reversal of 13215747461 is 16474751231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13215747461 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 (13215747481) 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, 312881 + ... + 352598.

It is an arithmetic number, because the mean of its divisors is an integer number (1888632240).

Almost surely, 2^13215747461 is an apocalyptic number.

It is an amenable number.

13215747461 is a deficient number, since it is larger than the sum of its proper divisors (1893310459).

13215747461 is an equidigital number, since it uses as much as digits as its factorization.

13215747461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668323.

The product of its digits is 141120, while the sum is 41.

The spelling of 13215747461 in words is "thirteen billion, two hundred fifteen million, seven hundred forty-seven thousand, four hundred sixty-one".