47528965121 has 4 divisors (see below), whose sum is σ = 51849780144. Its totient is φ = 43208150100.

The previous prime is 47528965103. The next prime is 47528965147. The reversal of 47528965121 is 12156982574.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47528965121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47528965121.

It is not an unprimeable number, because it can be changed into a prime (47528965171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2160407495 + ... + 2160407516.

It is an arithmetic number, because the mean of its divisors is an integer number (12962445036).

Almost surely, 2^47528965121 is an apocalyptic number.

It is an amenable number.

47528965121 is a deficient number, since it is larger than the sum of its proper divisors (4320815023).

47528965121 is a wasteful number, since it uses less digits than its factorization.

47528965121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320815022.

The product of its digits is 1209600, while the sum is 50.

The spelling of 47528965121 in words is "forty-seven billion, five hundred twenty-eight million, nine hundred sixty-five thousand, one hundred twenty-one".