7821870577092 has 144 divisors (see below), whose sum is σ = 23722811304192. Its totient is φ = 2141383933440.

The previous prime is 7821870577063. The next prime is 7821870577111. The reversal of 7821870577092 is 2907750781287.

It is a super-2 number, since 2×7821870577092² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15921873 + ... + 16405784.

It is an arithmetic number, because the mean of its divisors is an integer number (164741745168).

Almost surely, 2^{7821870577092} is an apocalyptic number.

It is an amenable number.

7821870577092 is an abundant number, since it is smaller than the sum of its proper divisors (15900940727100).

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

7821870577092 is a wasteful number, since it uses less digits than its factorization.

7821870577092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32327738 (or 32327733 counting only the distinct ones).

The product of its (nonzero) digits is 27659520, while the sum is 63.

The spelling of 7821870577092 in words is "seven trillion, eight hundred twenty-one billion, eight hundred seventy million, five hundred seventy-seven thousand, ninety-two".