17628138431 has 2 divisors, whose sum is σ = 17628138432. Its totient is φ = 17628138430.

The previous prime is 17628138371. The next prime is 17628138443. The reversal of 17628138431 is 13483182671.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17628138431 - 2³⁴ = 448269247 is a prime.

It is a super-2 number, since 2×17628138431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17628138481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8814069215 + 8814069216.

It is an arithmetic number, because the mean of its divisors is an integer number (8814069216).

Almost surely, 2^17628138431 is an apocalyptic number.

17628138431 is a deficient number, since it is larger than the sum of its proper divisors (1).

17628138431 is an equidigital number, since it uses as much as digits as its factorization.

17628138431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The spelling of 17628138431 in words is "seventeen billion, six hundred twenty-eight million, one hundred thirty-eight thousand, four hundred thirty-one".