12088657438 has 16 divisors (see below), whose sum is σ = 21303089136. Its totient is φ = 5072163840.

The previous prime is 12088657411. The next prime is 12088657439. The reversal of 12088657438 is 83475688021.

It is a super-2 number, since 2×12088657438² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12088657439) 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, 21133731 + ... + 21134302.

It is an arithmetic number, because the mean of its divisors is an integer number (1331443071).

Almost surely, 2^12088657438 is an apocalyptic number.

12088657438 is a deficient number, since it is larger than the sum of its proper divisors (9214431698).

12088657438 is a wasteful number, since it uses less digits than its factorization.

12088657438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42268059.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 12088657438 in words is "twelve billion, eighty-eight million, six hundred fifty-seven thousand, four hundred thirty-eight".