12536477261 has 8 divisors (see below), whose sum is σ = 15629893824. Its totient is φ = 9768683520.

The previous prime is 12536477257. The next prime is 12536477279. The reversal of 12536477261 is 16277463521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12536477261 - 2² = 12536477257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12536477231) 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, 81405620 + ... + 81405773.

It is an arithmetic number, because the mean of its divisors is an integer number (1953736728).

Almost surely, 2^12536477261 is an apocalyptic number.

12536477261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12536477261 is a deficient number, since it is larger than the sum of its proper divisors (3093416563).

12536477261 is a wasteful number, since it uses less digits than its factorization.

12536477261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162811411.

The product of its digits is 423360, while the sum is 44.

The spelling of 12536477261 in words is "twelve billion, five hundred thirty-six million, four hundred seventy-seven thousand, two hundred sixty-one".