15774545057 has 4 divisors (see below), whose sum is σ = 16009986096. Its totient is φ = 15539104020.

The previous prime is 15774544979. The next prime is 15774545071. The reversal of 15774545057 is 75054547751.

It is a happy number.

15774545057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75054547751 = 1697 ⋅44227783.

It is a cyclic number.

It is not a de Polignac number, because 15774545057 - 2¹⁶ = 15774479521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15774544996 and 15774545014.

It is not an unprimeable number, because it can be changed into a prime (15774545357) 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 in 3 ways as a sum of consecutive naturals, for example, 117720419 + ... + 117720552.

It is an arithmetic number, because the mean of its divisors is an integer number (4002496524).

Almost surely, 2^15774545057 is an apocalyptic number.

It is an amenable number.

15774545057 is a deficient number, since it is larger than the sum of its proper divisors (235441039).

15774545057 is an equidigital number, since it uses as much as digits as its factorization.

15774545057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235441038.

The product of its (nonzero) digits is 3430000, while the sum is 50.

The spelling of 15774545057 in words is "fifteen billion, seven hundred seventy-four million, five hundred forty-five thousand, fifty-seven".