23170997740 has 72 divisors (see below), whose sum is σ = 54850730256. Its totient is φ = 8153942400.

The previous prime is 23170997737. The next prime is 23170997741. The reversal of 23170997740 is 4779907132.

It is not an unprimeable number, because it can be changed into a prime (23170997741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156622 + ... + 266218.

It is an arithmetic number, because the mean of its divisors is an integer number (761815698).

Almost surely, 2^23170997740 is an apocalyptic number.

23170997740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23170997740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27425365128).

23170997740 is an abundant number, since it is smaller than the sum of its proper divisors (31679732516).

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

23170997740 is a wasteful number, since it uses less digits than its factorization.

23170997740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109679 (or 109646 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 49.

The spelling of 23170997740 in words is "twenty-three billion, one hundred seventy million, nine hundred ninety-seven thousand, seven hundred forty".