23374447640 has 32 divisors (see below), whose sum is σ = 54289042560. Its totient is φ = 9048172800.

The previous prime is 23374447583. The next prime is 23374447643. The reversal of 23374447640 is 4674447332.

It is a junction number, because it is equal to n+sod(n) for n = 23374447591 and 23374447600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23374447643) 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, 9423941 + ... + 9426420.

It is an arithmetic number, because the mean of its divisors is an integer number (1696532580).

Almost surely, 2^23374447640 is an apocalyptic number.

23374447640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23374447640 is an abundant number, since it is smaller than the sum of its proper divisors (30914594920).

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

23374447640 is a wasteful number, since it uses less digits than its factorization.

23374447640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18850403 (or 18850399 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 44.

The spelling of 23374447640 in words is "twenty-three billion, three hundred seventy-four million, four hundred forty-seven thousand, six hundred forty".