15621032041 has 2 divisors, whose sum is σ = 15621032042. Its totient is φ = 15621032040.

The previous prime is 15621032003. The next prime is 15621032051. The reversal of 15621032041 is 14023012651.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10945344400 + 4675687641 = 104620^2 + 68379^2 .

It is a cyclic number.

It is not a de Polignac number, because 15621032041 - 2¹¹ = 15621029993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15621031997 and 15621032015.

It is not a weakly prime, because it can be changed into another prime (15621032051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7810516020 + 7810516021.

It is an arithmetic number, because the mean of its divisors is an integer number (7810516021).

Almost surely, 2^15621032041 is an apocalyptic number.

It is an amenable number.

15621032041 is a deficient number, since it is larger than the sum of its proper divisors (1).

15621032041 is an equidigital number, since it uses as much as digits as its factorization.

15621032041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 15621032041 its reverse (14023012651), we get a palindrome (29644044692).

The spelling of 15621032041 in words is "fifteen billion, six hundred twenty-one million, thirty-two thousand, forty-one".