8501388421000 has 32 divisors (see below), whose sum is σ = 19893248907480. Its totient is φ = 3400555368000.

The previous prime is 8501388420961. The next prime is 8501388421037. The reversal of 8501388421000 is 1248831058.

It can be written as a sum of positive squares in 4 ways, for example, as 2449857300804 + 6051531120196 = 1565202^2 + 2459986^2 .

It is a super-3 number, since 3×8501388421000³ (a number of 40 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4250693211 + ... + 4250695210.

Almost surely, 2^{8501388421000} is an apocalyptic number.

It is an amenable number.

8501388421000 is an abundant number, since it is smaller than the sum of its proper divisors (11391860486480).

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

8501388421000 is a wasteful number, since it uses less digits than its factorization.

8501388421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8501388442 (or 8501388428 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 8501388421000 in words is "eight trillion, five hundred one billion, three hundred eighty-eight million, four hundred twenty-one thousand".