23156033357 has 24 divisors (see below), whose sum is σ = 24657333120. Its totient is φ = 21702859200.

The previous prime is 23156033347. The next prime is 23156033371. The reversal of 23156033357 is 75333065132.

It is a happy number.

It is not a de Polignac number, because 23156033357 - 2⁶ = 23156033293 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 23156033357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23156033347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27599144 + ... + 27599982.

It is an arithmetic number, because the mean of its divisors is an integer number (1027388880).

Almost surely, 2^23156033357 is an apocalyptic number.

It is an amenable number.

23156033357 is a deficient number, since it is larger than the sum of its proper divisors (1501299763).

23156033357 is a wasteful number, since it uses less digits than its factorization.

23156033357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 38.

Adding to 23156033357 its reverse (75333065132), we get a palindrome (98489098489).

The spelling of 23156033357 in words is "twenty-three billion, one hundred fifty-six million, thirty-three thousand, three hundred fifty-seven".