1011771877144 has 48 divisors (see below), whose sum is σ = 2237028532200. Its totient is φ = 427676554368.

The previous prime is 1011771877139. The next prime is 1011771877147. The reversal of 1011771877144 is 4417781771101.

1011771877144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011771877147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17649814 + ... + 17707045.

Almost surely, 2^{1011771877144} is an apocalyptic number.

1011771877144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1011771877144 is an abundant number, since it is smaller than the sum of its proper divisors (1225256655056).

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

1011771877144 is a wasteful number, since it uses less digits than its factorization.

1011771877144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35356952 (or 35356941 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 49.

The spelling of 1011771877144 in words is "one trillion, eleven billion, seven hundred seventy-one million, eight hundred seventy-seven thousand, one hundred forty-four".