1977733358680 has 64 divisors (see below), whose sum is σ = 4615215713280. Its totient is φ = 761945788800.

The previous prime is 1977733358663. The next prime is 1977733358687. The reversal of 1977733358680 is 868533377791.

It is a super-2 number, since 2×1977733358680² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977733358687) by changing a digit.

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, 3517854 + ... + 4041133.

It is an arithmetic number, because the mean of its divisors is an integer number (72112745520).

Almost surely, 2^{1977733358680} is an apocalyptic number.

1977733358680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1977733358680 is an abundant number, since it is smaller than the sum of its proper divisors (2637482354600).

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

1977733358680 is a wasteful number, since it uses less digits than its factorization.

1977733358680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559240 (or 7559236 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 67.

The spelling of 1977733358680 in words is "one trillion, nine hundred seventy-seven billion, seven hundred thirty-three million, three hundred fifty-eight thousand, six hundred eighty".