12701498781 has 4 divisors (see below), whose sum is σ = 16935331712. Its totient is φ = 8467665852.

The previous prime is 12701498767. The next prime is 12701498783. The reversal of 12701498781 is 18789410721.

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.

It is not a de Polignac number, because 12701498781 - 2¹¹ = 12701496733 is a prime.

It is a super-2 number, since 2×12701498781² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12701498781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12701498783) 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, 2116916461 + ... + 2116916466.

It is an arithmetic number, because the mean of its divisors is an integer number (4233832928).

Almost surely, 2^12701498781 is an apocalyptic number.

It is an amenable number.

12701498781 is a deficient number, since it is larger than the sum of its proper divisors (4233832931).

12701498781 is an equidigital number, since it uses as much as digits as its factorization.

12701498781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233832930.

The product of its (nonzero) digits is 225792, while the sum is 48.

It can be divided in two parts, 1270 and 1498781, that added together give a palindrome (1500051).

The spelling of 12701498781 in words is "twelve billion, seven hundred one million, four hundred ninety-eight thousand, seven hundred eighty-one".