1170021811640 has 64 divisors (see below), whose sum is σ = 2872140824160. Its totient is φ = 425422609920.

The previous prime is 1170021811601. The next prime is 1170021811691. The reversal of 1170021811640 is 461181200711.

It is a junction number, because it is equal to n+sod(n) for n = 1170021811597 and 1170021811606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4797122 + ... + 5035118.

Almost surely, 2^{1170021811640} is an apocalyptic number.

1170021811640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1170021811640 is an abundant number, since it is smaller than the sum of its proper divisors (1702119012520).

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

1170021811640 is a wasteful number, since it uses less digits than its factorization.

1170021811640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249192 (or 249188 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 32.

The spelling of 1170021811640 in words is "one trillion, one hundred seventy billion, twenty-one million, eight hundred eleven thousand, six hundred forty".