47238507252157 has 4 divisors (see below), whose sum is σ = 50872238579260. Its totient is φ = 43604775925056.

The previous prime is 47238507252077. The next prime is 47238507252161. The reversal of 47238507252157 is 75125270583274.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4741850301241 + 42496656950916 = 2177579^2 + 6518946^2 .

It is a cyclic number.

It is not a de Polignac number, because 47238507252157 - 2³¹ = 47236359768509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47238507250157) 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, 1816865663532 + ... + 1816865663557.

It is an arithmetic number, because the mean of its divisors is an integer number (12718059644815).

Almost surely, 2^{47238507252157} is an apocalyptic number.

It is an amenable number.

47238507252157 is a deficient number, since it is larger than the sum of its proper divisors (3633731327103).

47238507252157 is a wasteful number, since it uses less digits than its factorization.

47238507252157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633731327102.

The product of its (nonzero) digits is 32928000, while the sum is 58.

The spelling of 47238507252157 in words is "forty-seven trillion, two hundred thirty-eight billion, five hundred seven million, two hundred fifty-two thousand, one hundred fifty-seven".