15391220041 has 4 divisors (see below), whose sum is σ = 15421819392. Its totient is φ = 15360620692.

The previous prime is 15391220029. The next prime is 15391220057. The reversal of 15391220041 is 14002219351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15391220041 - 2⁷ = 15391219913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15391219991 and 15391220009.

It is not an unprimeable number, because it can be changed into a prime (15391220021) 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, 15298921 + ... + 15299926.

It is an arithmetic number, because the mean of its divisors is an integer number (3855454848).

Almost surely, 2^15391220041 is an apocalyptic number.

It is an amenable number.

15391220041 is a deficient number, since it is larger than the sum of its proper divisors (30599351).

15391220041 is an equidigital number, since it uses as much as digits as its factorization.

15391220041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30599350.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 15391220041 its reverse (14002219351), we get a palindrome (29393439392).

The spelling of 15391220041 in words is "fifteen billion, three hundred ninety-one million, two hundred twenty thousand, forty-one".