12039487477 has 4 divisors (see below), whose sum is σ = 12059322496. Its totient is φ = 12019652460.

The previous prime is 12039487469. The next prime is 12039487487. The reversal of 12039487477 is 77478493021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77478493021 = 17 ⋅4557558413.

It is a cyclic number.

It is not a de Polignac number, because 12039487477 - 2³ = 12039487469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12039487487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9916599 + ... + 9917812.

It is an arithmetic number, because the mean of its divisors is an integer number (3014830624).

Almost surely, 2^12039487477 is an apocalyptic number.

It is an amenable number.

12039487477 is a deficient number, since it is larger than the sum of its proper divisors (19835019).

12039487477 is an equidigital number, since it uses as much as digits as its factorization.

12039487477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835018.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 12039487477 in words is "twelve billion, thirty-nine million, four hundred eighty-seven thousand, four hundred seventy-seven".