1273571640081 has 32 divisors (see below), whose sum is σ = 2036298001920. Its totient is φ = 782043558912.

The previous prime is 1273571640067. The next prime is 1273571640139. The reversal of 1273571640081 is 1800461753721.

1273571640081 is a `hidden beast` number, since 1 + 2 + 73 + 571 + 6 + 4 + 0 + 0 + 8 + 1 = 666.

It is not a de Polignac number, because 1273571640081 - 2⁷ = 1273571639953 is a prime.

It is a super-2 number, since 2×1273571640081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1273571640001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3755856 + ... + 4080881.

It is an arithmetic number, because the mean of its divisors is an integer number (63634312560).

Almost surely, 2^{1273571640081} is an apocalyptic number.

It is an amenable number.

1273571640081 is a deficient number, since it is larger than the sum of its proper divisors (762726361839).

1273571640081 is a wasteful number, since it uses less digits than its factorization.

1273571640081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7837222 (or 7837216 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 1273571640081 in words is "one trillion, two hundred seventy-three billion, five hundred seventy-one million, six hundred forty thousand, eighty-one".