23021434550 has 48 divisors (see below), whose sum is σ = 45168537600. Its totient is φ = 8705527200.

The previous prime is 23021434549. The next prime is 23021434609. The reversal of 23021434550 is 5543412032.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429755 + ... + 480345.

It is an arithmetic number, because the mean of its divisors is an integer number (941011200).

Almost surely, 2^23021434550 is an apocalyptic number.

23021434550 is a deficient number, since it is larger than the sum of its proper divisors (22147103050).

23021434550 is a wasteful number, since it uses less digits than its factorization.

23021434550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51101 (or 51096 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 23021434550 its reverse (5543412032), we get a palindrome (28564846582).

The spelling of 23021434550 in words is "twenty-three billion, twenty-one million, four hundred thirty-four thousand, five hundred fifty".