23217007516 has 24 divisors (see below), whose sum is σ = 43811303760. Its totient is φ = 10729296000.

The previous prime is 23217007477. The next prime is 23217007529. The reversal of 23217007516 is 61570071232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3722335 + ... + 3728566.

It is an arithmetic number, because the mean of its divisors is an integer number (1825470990).

Almost surely, 2^23217007516 is an apocalyptic number.

It is an amenable number.

23217007516 is a deficient number, since it is larger than the sum of its proper divisors (20594296244).

23217007516 is a wasteful number, since it uses less digits than its factorization.

23217007516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7450965 (or 7450963 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

Adding to 23217007516 its reverse (61570071232), we get a palindrome (84787078748).

The spelling of 23217007516 in words is "twenty-three billion, two hundred seventeen million, seven thousand, five hundred sixteen".