23537653839845 has 16 divisors (see below), whose sum is σ = 28965237199920. Its totient is φ = 18351076761600.

The previous prime is 23537653839829. The next prime is 23537653839851. The reversal of 23537653839845 is 54893835673532.

It is a Cunningham number, because it is equal to 4851562²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 9907373169604 + 13630280670241 = 3147598^2 + 3691921^2 .

It is not a de Polignac number, because 23537653839845 - 2⁴ = 23537653839829 is a prime.

It is a super-2 number, since 2×23537653839845² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61606016 + ... + 61986905.

It is an arithmetic number, because the mean of its divisors is an integer number (1810327324995).

Almost surely, 2^{23537653839845} is an apocalyptic number.

It is an amenable number.

23537653839845 is a deficient number, since it is larger than the sum of its proper divisors (5427583360075).

23537653839845 is a wasteful number, since it uses less digits than its factorization.

23537653839845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123593896.

The product of its digits is 1959552000, while the sum is 71.

The spelling of 23537653839845 in words is "twenty-three trillion, five hundred thirty-seven billion, six hundred fifty-three million, eight hundred thirty-nine thousand, eight hundred forty-five".