23227155440 has 40 divisors (see below), whose sum is σ = 54888445248. Its totient is φ = 9138551040.

The previous prime is 23227155407. The next prime is 23227155443. The reversal of 23227155440 is 4455172232.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 23227155440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23227155443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374952 + ... + 2384711.

Almost surely, 2^23227155440 is an apocalyptic number.

23227155440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23227155440 is an abundant number, since it is smaller than the sum of its proper divisors (31661289808).

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

23227155440 is a wasteful number, since it uses less digits than its factorization.

23227155440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759737 (or 4759731 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 23227155440 in words is "twenty-three billion, two hundred twenty-seven million, one hundred fifty-five thousand, four hundred forty".