15449291467991 has 2 divisors, whose sum is σ = 15449291467992. Its totient is φ = 15449291467990.

The previous prime is 15449291467769. The next prime is 15449291467997. The reversal of 15449291467991 is 19976419294451.

15449291467991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15449291467991 - 2¹⁸ = 15449291205847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15449291467997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7724645733995 + 7724645733996.

It is an arithmetic number, because the mean of its divisors is an integer number (7724645733996).

Almost surely, 2^{15449291467991} is an apocalyptic number.

15449291467991 is a deficient number, since it is larger than the sum of its proper divisors (1).

15449291467991 is an equidigital number, since it uses as much as digits as its factorization.

15449291467991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176359680, while the sum is 71.

The spelling of 15449291467991 in words is "fifteen trillion, four hundred forty-nine billion, two hundred ninety-one million, four hundred sixty-seven thousand, nine hundred ninety-one".