15227863401247 has 4 divisors (see below), whose sum is σ = 17403272458576. Its totient is φ = 13052454343920.

The previous prime is 15227863401119. The next prime is 15227863401253. The reversal of 15227863401247 is 74210436872251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15227863401247 - 2⁷ = 15227863401119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15227863401194 and 15227863401203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15227863401287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087704528654 + ... + 1087704528667.

It is an arithmetic number, because the mean of its divisors is an integer number (4350818114644).

Almost surely, 2^{15227863401247} is an apocalyptic number.

15227863401247 is a deficient number, since it is larger than the sum of its proper divisors (2175409057329).

15227863401247 is an equidigital number, since it uses as much as digits as its factorization.

15227863401247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175409057328.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 15227863401247 in words is "fifteen trillion, two hundred twenty-seven billion, eight hundred sixty-three million, four hundred one thousand, two hundred forty-seven".