5169521745 has 48 divisors (see below), whose sum is σ = 9436078080. Its totient is φ = 2612953728.

The previous prime is 5169521741. The next prime is 5169521779. The reversal of 5169521745 is 5471259615.

It is a happy number.

5169521745 is a `hidden beast` number, since 51 + 6 + 9 + 521 + 74 + 5 = 666.

It is not a de Polignac number, because 5169521745 - 2² = 5169521741 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5169521745.

It is not an unprimeable number, because it can be changed into a prime (5169521741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89904 + ... + 135726.

It is an arithmetic number, because the mean of its divisors is an integer number (196584960).

Almost surely, 2^5169521745 is an apocalyptic number.

It is an amenable number.

5169521745 is a deficient number, since it is larger than the sum of its proper divisors (4266556335).

5169521745 is a wasteful number, since it uses less digits than its factorization.

5169521745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45966 (or 45963 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 5169521745 is about 71899.3862630273. The cubic root of 5169521745 is about 1729.0867739646.

The spelling of 5169521745 in words is "five billion, one hundred sixty-nine million, five hundred twenty-one thousand, seven hundred forty-five".