47397758838 has 16 divisors (see below), whose sum is σ = 96812444160. Its totient is φ = 15463098536.

The previous prime is 47397758813. The next prime is 47397758839. The reversal of 47397758838 is 83885779374.

It is a super-2 number, since 2×47397758838² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47397758839) 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, 84038298 + ... + 84038861.

It is an arithmetic number, because the mean of its divisors is an integer number (6050777760).

Almost surely, 2^47397758838 is an apocalyptic number.

47397758838 is an abundant number, since it is smaller than the sum of its proper divisors (49414685322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47397758838 is a wasteful number, since it uses less digits than its factorization.

47397758838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168077211.

The product of its digits is 284497920, while the sum is 69.

The spelling of 47397758838 in words is "forty-seven billion, three hundred ninety-seven million, seven hundred fifty-eight thousand, eight hundred thirty-eight".