47531799381 has 32 divisors (see below), whose sum is σ = 71465103360. Its totient is φ = 27839721600.

The previous prime is 47531799377. The next prime is 47531799433. The reversal of 47531799381 is 18399713574.

47531799381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47531799381 - 2² = 47531799377 is a prime.

It is a super-2 number, since 2×47531799381² (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 (47531799311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724561 + ... + 787433.

It is an arithmetic number, because the mean of its divisors is an integer number (2233284480).

Almost surely, 2^47531799381 is an apocalyptic number.

It is an amenable number.

47531799381 is a deficient number, since it is larger than the sum of its proper divisors (23933303979).

47531799381 is a wasteful number, since it uses less digits than its factorization.

47531799381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63657.

The product of its digits is 5715360, while the sum is 57.

The spelling of 47531799381 in words is "forty-seven billion, five hundred thirty-one million, seven hundred ninety-nine thousand, three hundred eighty-one".