1012765644620 has 96 divisors (see below), whose sum is σ = 2263728660480. Its totient is φ = 379511481600.

The previous prime is 1012765644589. The next prime is 1012765644623. The reversal of 1012765644620 is 264465672101.

It is not an unprimeable number, because it can be changed into a prime (1012765644623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31570709 + ... + 31602771.

It is an arithmetic number, because the mean of its divisors is an integer number (23580506880).

Almost surely, 2^{1012765644620} is an apocalyptic number.

1012765644620 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 1012765644620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131864330240).

1012765644620 is an abundant number, since it is smaller than the sum of its proper divisors (1250963015860).

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

1012765644620 is a wasteful number, since it uses less digits than its factorization.

1012765644620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33015 (or 33013 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 1012765644620 in words is "one trillion, twelve billion, seven hundred sixty-five million, six hundred forty-four thousand, six hundred twenty".