1021668094940 has 12 divisors (see below), whose sum is σ = 2145502999416. Its totient is φ = 408667237968.

The previous prime is 1021668094907. The next prime is 1021668094969. The reversal of 1021668094940 is 494908661201.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 25541702354 + ... + 25541702393.

It is an arithmetic number, because the mean of its divisors is an integer number (178791916618).

Almost surely, 2^{1021668094940} is an apocalyptic number.

1021668094940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021668094940 is an abundant number, since it is smaller than the sum of its proper divisors (1123834904476).

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

1021668094940 is a wasteful number, since it uses less digits than its factorization.

1021668094940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51083404756 (or 51083404754 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 1021668094940 in words is "one trillion, twenty-one billion, six hundred sixty-eight million, ninety-four thousand, nine hundred forty".