23220401552 has 80 divisors (see below), whose sum is σ = 46760042880. Its totient is φ = 11163350016.

The previous prime is 23220401531. The next prime is 23220401569. The reversal of 23220401552 is 25510402232.

It is a super-2 number, since 2×23220401552² (a number of 22 digits) contains 22 as substring.

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, 24365108 + ... + 24366060.

It is an arithmetic number, because the mean of its divisors is an integer number (584500536).

Almost surely, 2^23220401552 is an apocalyptic number.

It is an amenable number.

23220401552 is an abundant number, since it is smaller than the sum of its proper divisors (23539641328).

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

23220401552 is a wasteful number, since it uses less digits than its factorization.

23220401552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 23220401552 its reverse (25510402232), we get a palindrome (48730803784).

The spelling of 23220401552 in words is "twenty-three billion, two hundred twenty million, four hundred one thousand, five hundred fifty-two".