240672640073 has 4 divisors (see below), whose sum is σ = 241065255108. Its totient is φ = 240280025040.

The previous prime is 240672639959. The next prime is 240672640093. The reversal of 240672640073 is 370046276042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370046276042 = 2 ⋅185023138021.

It can be written as a sum of positive squares in 2 ways, for example, as 13917628729 + 226755011344 = 117973^2 + 476188^2 .

It is a cyclic number.

It is not a de Polignac number, because 240672640073 - 2³⁴ = 223492770889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240672640073.

It is not an unprimeable number, because it can be changed into a prime (240672640093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196306598 + ... + 196307823.

It is an arithmetic number, because the mean of its divisors is an integer number (60266313777).

Almost surely, 2^240672640073 is an apocalyptic number.

It is an amenable number.

240672640073 is a deficient number, since it is larger than the sum of its proper divisors (392615035).

240672640073 is an equidigital number, since it uses as much as digits as its factorization.

240672640073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392615034.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 240672640073 in words is "two hundred forty billion, six hundred seventy-two million, six hundred forty thousand, seventy-three".