47238738621437 has 4 divisors (see below), whose sum is σ = 51533169405216. Its totient is φ = 42944307837660.

The previous prime is 47238738621421. The next prime is 47238738621493. The reversal of 47238738621437 is 73412683783274.

It is a happy number.

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 not a de Polignac number, because 47238738621437 - 2⁴ = 47238738621421 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 (47238738611437) 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, 2147215391873 + ... + 2147215391894.

It is an arithmetic number, because the mean of its divisors is an integer number (12883292351304).

Almost surely, 2^{47238738621437} is an apocalyptic number.

It is an amenable number.

47238738621437 is a deficient number, since it is larger than the sum of its proper divisors (4294430783779).

47238738621437 is a wasteful number, since it uses less digits than its factorization.

47238738621437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294430783778.

The product of its digits is 227598336, while the sum is 65.

The spelling of 47238738621437 in words is "forty-seven trillion, two hundred thirty-eight billion, seven hundred thirty-eight million, six hundred twenty-one thousand, four hundred thirty-seven".