1972540782541 has 8 divisors (see below), whose sum is σ = 2254588015680. Its totient is φ = 1690557472608.

The previous prime is 1972540782539. The next prime is 1972540782577. The reversal of 1972540782541 is 1452870452791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1972540782541 - 2¹ = 1972540782539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972540782941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15914656 + ... + 16038121.

It is an arithmetic number, because the mean of its divisors is an integer number (281823501960).

Almost surely, 2^{1972540782541} is an apocalyptic number.

It is an amenable number.

1972540782541 is a deficient number, since it is larger than the sum of its proper divisors (282047233139).

1972540782541 is an equidigital number, since it uses as much as digits as its factorization.

1972540782541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31961603.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 1972540782541 in words is "one trillion, nine hundred seventy-two billion, five hundred forty million, seven hundred eighty-two thousand, five hundred forty-one".