10012537681 has 4 divisors (see below), whose sum is σ = 10012985152. Its totient is φ = 10012090212.

The previous prime is 10012537679. The next prime is 10012537741. The reversal of 10012537681 is 18673521001.

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.

It is a cyclic number.

It is not a de Polignac number, because 10012537681 - 2¹ = 10012537679 is a prime.

It is a super-2 number, since 2×10012537681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10012532681) 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, 188301 + ... + 235546.

It is an arithmetic number, because the mean of its divisors is an integer number (2503246288).

Almost surely, 2^10012537681 is an apocalyptic number.

It is an amenable number.

10012537681 is a deficient number, since it is larger than the sum of its proper divisors (447471).

10012537681 is an equidigital number, since it uses as much as digits as its factorization.

10012537681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447470.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 10012537681 in words is "ten billion, twelve million, five hundred thirty-seven thousand, six hundred eighty-one".