8212651723 has 16 divisors (see below), whose sum is σ = 8577653760. Its totient is φ = 7853328000.

The previous prime is 8212651717. The next prime is 8212651747. The reversal of 8212651723 is 3271562128.

It is a cyclic number.

It is not a de Polignac number, because 8212651723 - 2²¹ = 8210554571 is a prime.

It is a super-4 number, since 4×8212651723⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8212651753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2580193 + ... + 2583373.

It is an arithmetic number, because the mean of its divisors is an integer number (536103360).

Almost surely, 2^8212651723 is an apocalyptic number.

8212651723 is a deficient number, since it is larger than the sum of its proper divisors (365002037).

8212651723 is a wasteful number, since it uses less digits than its factorization.

8212651723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038.

The product of its digits is 40320, while the sum is 37.

The square root of 8212651723 is about 90623.6819104146. The cubic root of 8212651723 is about 2017.5662388380.

The spelling of 8212651723 in words is "eight billion, two hundred twelve million, six hundred fifty-one thousand, seven hundred twenty-three".