23540401651553 has 2 divisors, whose sum is σ = 23540401651554. Its totient is φ = 23540401651552.

The previous prime is 23540401651511. The next prime is 23540401651567. The reversal of 23540401651553 is 35515610404532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18139276914529 + 5401124737024 = 4259023^2 + 2324032^2 .

It is a cyclic number.

It is not a de Polignac number, because 23540401651553 - 2¹⁰ = 23540401650529 is a prime.

It is not a weakly prime, because it can be changed into another prime (23540401651583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11770200825776 + 11770200825777.

It is an arithmetic number, because the mean of its divisors is an integer number (11770200825777).

Almost surely, 2^{23540401651553} is an apocalyptic number.

It is an amenable number.

23540401651553 is a deficient number, since it is larger than the sum of its proper divisors (1).

23540401651553 is an equidigital number, since it uses as much as digits as its factorization.

23540401651553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 23540401651553 in words is "twenty-three trillion, five hundred forty billion, four hundred one million, six hundred fifty-one thousand, five hundred fifty-three".