1020820443670 has 32 divisors (see below), whose sum is σ = 1860350188032. Its totient is φ = 403249092192.

The previous prime is 1020820443653. The next prime is 1020820443683. The reversal of 1020820443670 is 763440280201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1868869 + ... + 2352511.

It is an arithmetic number, because the mean of its divisors is an integer number (58135943376).

Almost surely, 2^{1020820443670} is an apocalyptic number.

1020820443670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020820443670 is a deficient number, since it is larger than the sum of its proper divisors (839529744362).

1020820443670 is a wasteful number, since it uses less digits than its factorization.

1020820443670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486276.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 1020820443670 in words is "one trillion, twenty billion, eight hundred twenty million, four hundred forty-three thousand, six hundred seventy".