23017506387820 has 48 divisors (see below), whose sum is σ = 56066523045120. Its totient is φ = 7773929659584.

The previous prime is 23017506387817. The next prime is 23017506387823. The reversal of 23017506387820 is 2878360571032.

It is an interprime number because it is at equal distance from previous prime (23017506387817) and next prime (23017506387823).

It is not an unprimeable number, because it can be changed into a prime (23017506387823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1226936590 + ... + 1226955349.

It is an arithmetic number, because the mean of its divisors is an integer number (1168052563440).

Almost surely, 2^{23017506387820} is an apocalyptic number.

23017506387820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23017506387820 is an abundant number, since it is smaller than the sum of its proper divisors (33049016657300).

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

23017506387820 is a wasteful number, since it uses less digits than its factorization.

23017506387820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453892022 (or 2453892020 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 23017506387820 in words is "twenty-three trillion, seventeen billion, five hundred six million, three hundred eighty-seven thousand, eight hundred twenty".