15541141243 has 4 divisors (see below), whose sum is σ = 16455326040. Its totient is φ = 14626956448.

The previous prime is 15541141211. The next prime is 15541141271. The reversal of 15541141243 is 34214114551.

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 15541141243 - 2⁵ = 15541141211 is a prime.

It is a super-2 number, since 2×15541141243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15541141943) 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, 457092373 + ... + 457092406.

It is an arithmetic number, because the mean of its divisors is an integer number (4113831510).

Almost surely, 2^15541141243 is an apocalyptic number.

15541141243 is a deficient number, since it is larger than the sum of its proper divisors (914184797).

15541141243 is an equidigital number, since it uses as much as digits as its factorization.

15541141243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914184796.

The product of its digits is 9600, while the sum is 31.

Adding to 15541141243 its reverse (34214114551), we get a palindrome (49755255794).

The spelling of 15541141243 in words is "fifteen billion, five hundred forty-one million, one hundred forty-one thousand, two hundred forty-three".