47557145537 has 4 divisors (see below), whose sum is σ = 51880522416. Its totient is φ = 43233768660.

The previous prime is 47557145507. The next prime is 47557145579. The reversal of 47557145537 is 73554175574.

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-47557145537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47557145507) 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, 2161688423 + ... + 2161688444.

It is an arithmetic number, because the mean of its divisors is an integer number (12970130604).

Almost surely, 2^47557145537 is an apocalyptic number.

It is an amenable number.

47557145537 is a deficient number, since it is larger than the sum of its proper divisors (4323376879).

47557145537 is a wasteful number, since it uses less digits than its factorization.

47557145537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323376878.

The product of its digits is 10290000, while the sum is 53.

The spelling of 47557145537 in words is "forty-seven billion, five hundred fifty-seven million, one hundred forty-five thousand, five hundred thirty-seven".