8213455480 has 64 divisors (see below), whose sum is σ = 20418143040. Its totient is φ = 2957678592.

The previous prime is 8213455477. The next prime is 8213455483. The reversal of 8213455480 is 845543128.

It is an interprime number because it is at equal distance from previous prime (8213455477) and next prime (8213455483).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213455483) 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, 246939 + ... + 278218.

It is an arithmetic number, because the mean of its divisors is an integer number (319033485).

Almost surely, 2^8213455480 is an apocalyptic number.

It is an amenable number.

8213455480 is an abundant number, since it is smaller than the sum of its proper divisors (12204687560).

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

8213455480 is a wasteful number, since it uses less digits than its factorization.

8213455480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525208 (or 525204 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 8213455480 is about 90628.1163877966. The cubic root of 8213455480 is about 2017.6320551802.

The spelling of 8213455480 in words is "eight billion, two hundred thirteen million, four hundred fifty-five thousand, four hundred eighty".