8213210374388 has 24 divisors (see below), whose sum is σ = 14579356733760. Its totient is φ = 4047752053440.

The previous prime is 8213210374367. The next prime is 8213210374409. The reversal of 8213210374388 is 8834730123128.

It is an interprime number because it is at equal distance from previous prime (8213210374367) and next prime (8213210374409).

It is a super-2 number, since 2×8213210374388² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8565758 + ... + 9476213.

It is an arithmetic number, because the mean of its divisors is an integer number (607473197240).

Almost surely, 2^{8213210374388} is an apocalyptic number.

It is an amenable number.

8213210374388 is a deficient number, since it is larger than the sum of its proper divisors (6366146359372).

8213210374388 is a wasteful number, since it uses less digits than its factorization.

8213210374388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18043607 (or 18043605 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 8213210374388 in words is "eight trillion, two hundred thirteen billion, two hundred ten million, three hundred seventy-four thousand, three hundred eighty-eight".