23783977728001 has 4 divisors (see below), whose sum is σ = 24051213432900. Its totient is φ = 23516742023104.

The previous prime is 23783977727999. The next prime is 23783977728011. The reversal of 23783977728001 is 10082777938732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6271418318400 + 17512559409601 = 2504280^2 + 4184801^2 .

It is a cyclic number.

It is not a de Polignac number, because 23783977728001 - 2¹ = 23783977727999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23783977728011) 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, 133617852316 + ... + 133617852493.

It is an arithmetic number, because the mean of its divisors is an integer number (6012803358225).

Almost surely, 2^{23783977728001} is an apocalyptic number.

It is an amenable number.

23783977728001 is a deficient number, since it is larger than the sum of its proper divisors (267235704899).

23783977728001 is an equidigital number, since it uses as much as digits as its factorization.

23783977728001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267235704898.

The product of its (nonzero) digits is 49787136, while the sum is 64.

The spelling of 23783977728001 in words is "twenty-three trillion, seven hundred eighty-three billion, nine hundred seventy-seven million, seven hundred twenty-eight thousand, one".