1971750807040 has 80 divisors (see below), whose sum is σ = 5402949358752. Its totient is φ = 676028841984.

The previous prime is 1971750807007. The next prime is 1971750807053. The reversal of 1971750807040 is 407080571791.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 54997449 + ... + 55033288.

Almost surely, 2^{1971750807040} is an apocalyptic number.

1971750807040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1971750807040 is an abundant number, since it is smaller than the sum of its proper divisors (3431198551712).

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

1971750807040 is an equidigital number, since it uses as much as digits as its factorization.

1971750807040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110030767 (or 110030751 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 49.

The spelling of 1971750807040 in words is "one trillion, nine hundred seventy-one billion, seven hundred fifty million, eight hundred seven thousand, forty".