8215408075400 has 48 divisors (see below), whose sum is σ = 19101236306100. Its totient is φ = 3286092257280.

The previous prime is 8215408075363. The next prime is 8215408075421. The reversal of 8215408075400 is 45708045128.

It can be written as a sum of positive squares in 6 ways, for example, as 2155076848324 + 6060331227076 = 1468018^2 + 2461774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9382724 + ... + 10220876.

Almost surely, 2^{8215408075400} is an apocalyptic number.

It is an amenable number.

8215408075400 is an abundant number, since it is smaller than the sum of its proper divisors (10885828230700).

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

8215408075400 is a wasteful number, since it uses less digits than its factorization.

8215408075400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887178 (or 887169 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 44.

The spelling of 8215408075400 in words is "eight trillion, two hundred fifteen billion, four hundred eight million, seventy-five thousand, four hundred".