1020731646560 has 96 divisors (see below), whose sum is σ = 2539550089440. Its totient is φ = 386628083712.

The previous prime is 1020731646559. The next prime is 1020731646577. The reversal of 1020731646560 is 656461370201.

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, 6725432 + ... + 6875528.

It is an arithmetic number, because the mean of its divisors is an integer number (26453646765).

Almost surely, 2^{1020731646560} is an apocalyptic number.

1020731646560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020731646560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269775044720).

1020731646560 is an abundant number, since it is smaller than the sum of its proper divisors (1518818442880).

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

1020731646560 is a wasteful number, since it uses less digits than its factorization.

1020731646560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152368 (or 152360 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 1020731646560 in words is "one trillion, twenty billion, seven hundred thirty-one million, six hundred forty-six thousand, five hundred sixty".