1012091092720 has 80 divisors (see below), whose sum is σ = 2492775818208. Its totient is φ = 380832030720.

The previous prime is 1012091092643. The next prime is 1012091092801. The reversal of 1012091092720 is 272901902101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2549932 + ... + 2919988.

Almost surely, 2^{1012091092720} is an apocalyptic number.

1012091092720 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 1012091092720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246387909104).

1012091092720 is an abundant number, since it is smaller than the sum of its proper divisors (1480684725488).

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

1012091092720 is a wasteful number, since it uses less digits than its factorization.

1012091092720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372098 (or 372092 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

Adding to 1012091092720 its reverse (272901902101), we get a palindrome (1284992994821).

The spelling of 1012091092720 in words is "one trillion, twelve billion, ninety-one million, ninety-two thousand, seven hundred twenty".