8021691250516 has 48 divisors (see below), whose sum is σ = 14206058137600. Its totient is φ = 3963111688800.

The previous prime is 8021691250483. The next prime is 8021691250541. The reversal of 8021691250516 is 6150521961208.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 538831225 + ... + 538846111.

Almost surely, 2^{8021691250516} is an apocalyptic number.

It is an amenable number.

8021691250516 is a deficient number, since it is larger than the sum of its proper divisors (6184366887084).

8021691250516 is a wasteful number, since it uses less digits than its factorization.

8021691250516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19724 (or 19722 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 8021691250516 in words is "eight trillion, twenty-one billion, six hundred ninety-one million, two hundred fifty thousand, five hundred sixteen".