47912021193 has 32 divisors (see below), whose sum is σ = 66095834112. Its totient is φ = 30852360000.

The previous prime is 47912021191. The next prime is 47912021197. The reversal of 47912021193 is 39112021974.

It is not a de Polignac number, because 47912021193 - 2¹ = 47912021191 is a prime.

It is a super-2 number, since 2×47912021193² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (47912021191) 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, 8706943 + ... + 8712443.

It is an arithmetic number, because the mean of its divisors is an integer number (2065494816).

Almost surely, 2^47912021193 is an apocalyptic number.

47912021193 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

47912021193 is a deficient number, since it is larger than the sum of its proper divisors (18183812919).

47912021193 is a wasteful number, since it uses less digits than its factorization.

47912021193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285.

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 47912021193 in words is "forty-seven billion, nine hundred twelve million, twenty-one thousand, one hundred ninety-three".