8490287933840 has 40 divisors (see below), whose sum is σ = 19833473606208. Its totient is φ = 3380019834240.

The previous prime is 8490287933837. The next prime is 8490287933873. The reversal of 8490287933840 is 483397820948.

It is a tau number, because it is divible by the number of its divisors (40).

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, 251472692 + ... + 251506451.

Almost surely, 2^{8490287933840} is an apocalyptic number.

8490287933840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8490287933840 is an abundant number, since it is smaller than the sum of its proper divisors (11343185672368).

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

8490287933840 is a wasteful number, since it uses less digits than its factorization.

8490287933840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502979367 (or 502979361 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 8490287933840 in words is "eight trillion, four hundred ninety billion, two hundred eighty-seven million, nine hundred thirty-three thousand, eight hundred forty".