12771237434 has 16 divisors (see below), whose sum is σ = 19559016960. Its totient is φ = 6252824160.

The previous prime is 12771237421. The next prime is 12771237487. The reversal of 12771237434 is 43473217721.

It is a junction number, because it is equal to n+sod(n) for n = 12771237391 and 12771237400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294362 + ... + 334949.

It is an arithmetic number, because the mean of its divisors is an integer number (1222438560).

Almost surely, 2^12771237434 is an apocalyptic number.

12771237434 is a deficient number, since it is larger than the sum of its proper divisors (6787779526).

12771237434 is a wasteful number, since it uses less digits than its factorization.

12771237434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629525.

The product of its digits is 197568, while the sum is 41.

The spelling of 12771237434 in words is "twelve billion, seven hundred seventy-one million, two hundred thirty-seven thousand, four hundred thirty-four".