8212640373 has 48 divisors (see below), whose sum is σ = 14025523200. Its totient is φ = 4531554720.

The previous prime is 8212640357. The next prime is 8212640377. The reversal of 8212640373 is 3730462128.

It is a happy number.

8212640373 is a `hidden beast` number, since 8 + 2 + 1 + 2 + 640 + 3 + 7 + 3 = 666.

It is not a de Polignac number, because 8212640373 - 2⁴ = 8212640357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212640377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 931098 + ... + 939876.

It is an arithmetic number, because the mean of its divisors is an integer number (292198400).

Almost surely, 2^8212640373 is an apocalyptic number.

It is an amenable number.

8212640373 is a deficient number, since it is larger than the sum of its proper divisors (5812882827).

8212640373 is a wasteful number, since it uses less digits than its factorization.

8212640373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9302 (or 9299 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 8212640373 is about 90623.6192887925. The cubic root of 8212640373 is about 2017.5653094026.

The spelling of 8212640373 in words is "eight billion, two hundred twelve million, six hundred forty thousand, three hundred seventy-three".