10639254381 has 24 divisors (see below), whose sum is σ = 17221963200. Its totient is φ = 5721948672.

The previous prime is 10639254377. The next prime is 10639254407. The reversal of 10639254381 is 18345293601.

10639254381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10639254381 - 2² = 10639254377 is a prime.

It is a super-2 number, since 2×10639254381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10639254361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 870456 + ... + 882593.

It is an arithmetic number, because the mean of its divisors is an integer number (717581800).

Almost surely, 2^10639254381 is an apocalyptic number.

It is an amenable number.

10639254381 is a deficient number, since it is larger than the sum of its proper divisors (6582708819).

10639254381 is a wasteful number, since it uses less digits than its factorization.

10639254381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753093 (or 1753076 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 10639254381 in words is "ten billion, six hundred thirty-nine million, two hundred fifty-four thousand, three hundred eighty-one".