1020673399880 has 64 divisors (see below), whose sum is σ = 2302502232960. Its totient is φ = 407205646848.

The previous prime is 1020673399829. The next prime is 1020673399883. The reversal of 1020673399880 is 889933760201.

It is not an unprimeable number, because it can be changed into a prime (1020673399883) by changing a digit.

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, 61356044 + ... + 61372676.

It is an arithmetic number, because the mean of its divisors is an integer number (35976597390).

Almost surely, 2^{1020673399880} is an apocalyptic number.

1020673399880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020673399880 is an abundant number, since it is smaller than the sum of its proper divisors (1281828833080).

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

1020673399880 is a wasteful number, since it uses less digits than its factorization.

1020673399880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550 (or 20546 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 1020673399880 in words is "one trillion, twenty billion, six hundred seventy-three million, three hundred ninety-nine thousand, eight hundred eighty".