23511413120220 has 144 divisors (see below), whose sum is σ = 71944917058560. Its totient is φ = 6214735497600.

The previous prime is 23511413120189. The next prime is 23511413120291. The reversal of 23511413120220 is 2202131411532.

It is a happy number.

23511413120220 is a `hidden beast` number, since 2 + 3 + 5 + 1 + 1 + 413 + 1 + 20 + 220 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15043005 + ... + 16532235.

Almost surely, 2^{23511413120220} is an apocalyptic number.

23511413120220 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 23511413120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35972458529280).

23511413120220 is an abundant number, since it is smaller than the sum of its proper divisors (48433503938340).

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

23511413120220 is a wasteful number, since it uses less digits than its factorization.

23511413120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490016 (or 1490011 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 23511413120220 its reverse (2202131411532), we get a palindrome (25713544531752).

The spelling of 23511413120220 in words is "twenty-three trillion, five hundred eleven billion, four hundred thirteen million, one hundred twenty thousand, two hundred twenty".