2091777067980 has 48 divisors (see below), whose sum is σ = 6507750879840. Its totient is φ = 557807217984.

The previous prime is 2091777067949. The next prime is 2091777067999. The reversal of 2091777067980 is 897607771902.

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, 1936830079 + ... + 1936831158.

It is an arithmetic number, because the mean of its divisors is an integer number (135578143330).

Almost surely, 2^{2091777067980} is an apocalyptic number.

2091777067980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2091777067980 is an abundant number, since it is smaller than the sum of its proper divisors (4415973811860).

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

2091777067980 is a wasteful number, since it uses less digits than its factorization.

2091777067980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873661255 (or 3873661247 counting only the distinct ones).

The product of its (nonzero) digits is 18670176, while the sum is 63.

The spelling of 2091777067980 in words is "two trillion, ninety-one billion, seven hundred seventy-seven million, sixty-seven thousand, nine hundred eighty".