15212561043 has 4 divisors (see below), whose sum is σ = 20283414728. Its totient is φ = 10141707360.

The previous prime is 15212561029. The next prime is 15212561053. The reversal of 15212561043 is 34016521251.

15212561043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34016521251 = 3 ⋅11338840417.

It is not a de Polignac number, because 15212561043 - 2⁵ = 15212561011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15212561043.

It is not an unprimeable number, because it can be changed into a prime (15212561053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535426838 + ... + 2535426843.

It is an arithmetic number, because the mean of its divisors is an integer number (5070853682).

Almost surely, 2^15212561043 is an apocalyptic number.

15212561043 is a deficient number, since it is larger than the sum of its proper divisors (5070853685).

15212561043 is an equidigital number, since it uses as much as digits as its factorization.

15212561043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070853684.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 15212561043 in words is "fifteen billion, two hundred twelve million, five hundred sixty-one thousand, forty-three".