1972518792081 has 8 divisors (see below), whose sum is σ = 2694172008864. Its totient is φ = 1282939051680.

The previous prime is 1972518792071. The next prime is 1972518792109. The reversal of 1972518792081 is 1802978152791.

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

It is not a de Polignac number, because 1972518792081 - 2⁷ = 1972518791953 is a prime.

It is a super-2 number, since 2×1972518792081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1972518792001) 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, 8018368951 + ... + 8018369196.

It is an arithmetic number, because the mean of its divisors is an integer number (336771501108).

Almost surely, 2^{1972518792081} is an apocalyptic number.

It is an amenable number.

1972518792081 is a deficient number, since it is larger than the sum of its proper divisors (721653216783).

1972518792081 is a wasteful number, since it uses less digits than its factorization.

1972518792081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16036738191.

The product of its (nonzero) digits is 5080320, while the sum is 60.

The spelling of 1972518792081 in words is "one trillion, nine hundred seventy-two billion, five hundred eighteen million, seven hundred ninety-two thousand, eighty-one".