47420157538 has 8 divisors (see below), whose sum is σ = 76601792988. Its totient is φ = 21886226544.

The previous prime is 47420157479. The next prime is 47420157541. The reversal of 47420157538 is 83575102474.

It can be written as a sum of positive squares in 2 ways, for example, as 46609787449 + 810370089 = 215893^2 + 28467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911926081 + ... + 911926132.

Almost surely, 2^47420157538 is an apocalyptic number.

47420157538 is a deficient number, since it is larger than the sum of its proper divisors (29181635450).

47420157538 is a wasteful number, since it uses less digits than its factorization.

47420157538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823852228.

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 47420157538 in words is "forty-seven billion, four hundred twenty million, one hundred fifty-seven thousand, five hundred thirty-eight".