838845139457 has 16 divisors (see below), whose sum is σ = 925878898560. Its totient is φ = 755085082752.

The previous prime is 838845139417. The next prime is 838845139463. The reversal of 838845139457 is 754931548838.

It is not a de Polignac number, because 838845139457 - 2¹⁰ = 838845138433 is a prime.

It is a super-2 number, since 2×838845139457² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 838845139393 and 838845139402.

It is not an unprimeable number, because it can be changed into a prime (838845139417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871157 + ... + 1560962.

It is an arithmetic number, because the mean of its divisors is an integer number (57867431160).

Almost surely, 2^838845139457 is an apocalyptic number.

It is an amenable number.

838845139457 is a deficient number, since it is larger than the sum of its proper divisors (87033759103).

838845139457 is a wasteful number, since it uses less digits than its factorization.

838845139457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432792.

The product of its digits is 116121600, while the sum is 65.

The spelling of 838845139457 in words is "eight hundred thirty-eight billion, eight hundred forty-five million, one hundred thirty-nine thousand, four hundred fifty-seven".