15248454991 has 16 divisors (see below), whose sum is σ = 19399046400. Its totient is φ = 11881910040.

The previous prime is 15248454989. The next prime is 15248455009. The reversal of 15248454991 is 19945484251.

It is not a de Polignac number, because 15248454991 - 2¹ = 15248454989 is a prime.

It is a super-2 number, since 2×15248454991² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15248454961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016961 + ... + 2024506.

It is an arithmetic number, because the mean of its divisors is an integer number (1212440400).

Almost surely, 2^15248454991 is an apocalyptic number.

15248454991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15248454991 is a deficient number, since it is larger than the sum of its proper divisors (4150591409).

15248454991 is an equidigital number, since it uses as much as digits as its factorization.

15248454991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041499 (or 4041485 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The spelling of 15248454991 in words is "fifteen billion, two hundred forty-eight million, four hundred fifty-four thousand, nine hundred ninety-one".