1020166610520 has 32 divisors (see below), whose sum is σ = 3060499831920. Its totient is φ = 272044429440.

The previous prime is 1020166610513. The next prime is 1020166610543. The reversal of 1020166610520 is 250166610201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 4250694091 + ... + 4250694330.

Almost surely, 2^{1020166610520} is an apocalyptic number.

1020166610520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020166610520 is an abundant number, since it is smaller than the sum of its proper divisors (2040333221400).

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

1020166610520 is a wasteful number, since it uses less digits than its factorization.

1020166610520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8501388435 (or 8501388431 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 1020166610520 in words is "one trillion, twenty billion, one hundred sixty-six million, six hundred ten thousand, five hundred twenty".