8021623752 has 80 divisors (see below), whose sum is σ = 22495690800. Its totient is φ = 2670576480.

The previous prime is 8021623747. The next prime is 8021623763. The reversal of 8021623752 is 2573261208.

8021623752 is a `hidden beast` number, since 8 + 0 + 21 + 623 + 7 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 549427 + ... + 563837.

It is an arithmetic number, because the mean of its divisors is an integer number (281196135).

Almost surely, 2^8021623752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8021623752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11247845400).

8021623752 is an abundant number, since it is smaller than the sum of its proper divisors (14474067048).

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

8021623752 is a wasteful number, since it uses less digits than its factorization.

8021623752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15288 (or 15275 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 8021623752 is about 89563.5179746754. The cubic root of 8021623752 is about 2001.8003582022.

The spelling of 8021623752 in words is "eight billion, twenty-one million, six hundred twenty-three thousand, seven hundred fifty-two".