23015215356 has 192 divisors, whose sum is σ = 66403921920. Its totient is φ = 6057192960.

The previous prime is 23015215283. The next prime is 23015215357. The reversal of 23015215356 is 65351251032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23015215357) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35793171 + ... + 35793813.

It is an arithmetic number, because the mean of its divisors is an integer number (345853760).

Almost surely, 2^23015215356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23015215356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33201960960).

23015215356 is an abundant number, since it is smaller than the sum of its proper divisors (43388706564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23015215356 is a wasteful number, since it uses less digits than its factorization.

23015215356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 23015215356 its reverse (65351251032), we get a palindrome (88366466388).

The spelling of 23015215356 in words is "twenty-three billion, fifteen million, two hundred fifteen thousand, three hundred fifty-six".