1001077880920 has 64 divisors (see below), whose sum is σ = 2427120249120. Its totient is φ = 369410617344.

The previous prime is 1001077880909. The next prime is 1001077880947. The reversal of 1001077880920 is 290887701001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 315219 + ... + 1449661.

Almost surely, 2^{1001077880920} is an apocalyptic number.

1001077880920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001077880920 is an abundant number, since it is smaller than the sum of its proper divisors (1426042368200).

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

1001077880920 is a wasteful number, since it uses less digits than its factorization.

1001077880920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136164 (or 1136160 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 43.

The spelling of 1001077880920 in words is "one trillion, one billion, seventy-seven million, eight hundred eighty thousand, nine hundred twenty".