23723447881 has 8 divisors (see below), whose sum is σ = 27113962304. Its totient is φ = 20333296080.

The previous prime is 23723447873. The next prime is 23723447927. The reversal of 23723447881 is 18874432732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23723447881 - 2³ = 23723447873 is a prime.

It is a super-2 number, since 2×23723447881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23723447831) 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, 68071 + ... + 228211.

It is an arithmetic number, because the mean of its divisors is an integer number (3389245288).

Almost surely, 2^23723447881 is an apocalyptic number.

It is an amenable number.

23723447881 is a deficient number, since it is larger than the sum of its proper divisors (3390514423).

23723447881 is a wasteful number, since it uses less digits than its factorization.

23723447881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181311.

The product of its digits is 1806336, while the sum is 49.

The spelling of 23723447881 in words is "twenty-three billion, seven hundred twenty-three million, four hundred forty-seven thousand, eight hundred eighty-one".