1977725941312 has 56 divisors (see below), whose sum is σ = 4312577953440. Its totient is φ = 892404495360.

The previous prime is 1977725941283. The next prime is 1977725941327. The reversal of 1977725941312 is 2131495277791.

It is a super-2 number, since 2×1977725941312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10156362 + ... + 10349257.

Almost surely, 2^{1977725941312} is an apocalyptic number.

It is an amenable number.

1977725941312 is an abundant number, since it is smaller than the sum of its proper divisors (2334852012128).

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

1977725941312 is a wasteful number, since it uses less digits than its factorization.

1977725941312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20505779 (or 20505769 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 58.

The spelling of 1977725941312 in words is "one trillion, nine hundred seventy-seven billion, seven hundred twenty-five million, nine hundred forty-one thousand, three hundred twelve".