11502420478331 has 4 divisors (see below), whose sum is σ = 11641003857672. Its totient is φ = 11363837098992.

The previous prime is 11502420478313. The next prime is 11502420478333. The reversal of 11502420478331 is 13387402420511.

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 11502420478331 - 2⁶ = 11502420478267 is a prime.

It is a super-2 number, since 2×11502420478331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11502420478333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69291689546 + ... + 69291689711.

It is an arithmetic number, because the mean of its divisors is an integer number (2910250964418).

Almost surely, 2^{11502420478331} is an apocalyptic number.

11502420478331 is a deficient number, since it is larger than the sum of its proper divisors (138583379341).

11502420478331 is an equidigital number, since it uses as much as digits as its factorization.

11502420478331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138583379340.

The product of its (nonzero) digits is 161280, while the sum is 41.

Adding to 11502420478331 its reverse (13387402420511), we get a palindrome (24889822898842).

The spelling of 11502420478331 in words is "eleven trillion, five hundred two billion, four hundred twenty million, four hundred seventy-eight thousand, three hundred thirty-one".