1877045681644 has 12 divisors (see below), whose sum is σ = 3754091363344. Its totient is φ = 804448149264.

The previous prime is 1877045681573. The next prime is 1877045681647. The reversal of 1877045681644 is 4461865407781.

1877045681644 is an admirable number.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1877045681647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33518672859 + ... + 33518672914.

Almost surely, 2^{1877045681644} is an apocalyptic number.

1877045681644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1877045681644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1877045681644 is a wasteful number, since it uses less digits than its factorization.

1877045681644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67037345784 (or 67037345782 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 1877045681644 in words is "one trillion, eight hundred seventy-seven billion, forty-five million, six hundred eighty-one thousand, six hundred forty-four".