47897837438 has 16 divisors (see below), whose sum is σ = 78788643840. Its totient is φ = 21657754200.

The previous prime is 47897837437. The next prime is 47897837453. The reversal of 47897837438 is 83473879874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47897837431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695208 + ... + 5703611.

It is an arithmetic number, because the mean of its divisors is an integer number (4924290240).

Almost surely, 2^47897837438 is an apocalyptic number.

47897837438 is a deficient number, since it is larger than the sum of its proper divisors (30890806402).

47897837438 is a wasteful number, since it uses less digits than its factorization.

47897837438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399023.

The product of its digits is 227598336, while the sum is 68.

The spelling of 47897837438 in words is "forty-seven billion, eight hundred ninety-seven million, eight hundred thirty-seven thousand, four hundred thirty-eight".