23120544420 has 60 divisors (see below), whose sum is σ = 72530009244. Its totient is φ = 6165478080.

The previous prime is 23120544371. The next prime is 23120544439. The reversal of 23120544420 is 2444502132.

23120544420 is a `hidden beast` number, since 2 + 31 + 205 + 4 + 4 + 420 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17761425984 + 5359118436 = 133272^2 + 73206^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7134351 + ... + 7137590.

Almost surely, 2^23120544420 is an apocalyptic number.

23120544420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23120544420 is an abundant number, since it is smaller than the sum of its proper divisors (49409464824).

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

23120544420 is a wasteful number, since it uses less digits than its factorization.

23120544420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271962 (or 14271951 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

It can be divided in two parts, 231205 and 44420, that added together give a square (275625 = 525²).

The spelling of 23120544420 in words is "twenty-three billion, one hundred twenty million, five hundred forty-four thousand, four hundred twenty".