15457464889 has 2 divisors, whose sum is σ = 15457464890. Its totient is φ = 15457464888.

The previous prime is 15457464887. The next prime is 15457464937. The reversal of 15457464889 is 98846475451.

15457464889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13614222400 + 1843242489 = 116680^2 + 42933^2 .

It is a cyclic number.

It is not a de Polignac number, because 15457464889 - 2¹ = 15457464887 is a prime.

Together with 15457464887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15457464881) 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 as a sum of consecutive naturals, namely, 7728732444 + 7728732445.

It is an arithmetic number, because the mean of its divisors is an integer number (7728732445).

Almost surely, 2^15457464889 is an apocalyptic number.

It is an amenable number.

15457464889 is a deficient number, since it is larger than the sum of its proper divisors (1).

15457464889 is an equidigital number, since it uses as much as digits as its factorization.

15457464889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38707200, while the sum is 61.

The spelling of 15457464889 in words is "fifteen billion, four hundred fifty-seven million, four hundred sixty-four thousand, eight hundred eighty-nine".