13782137531 has 2 divisors, whose sum is σ = 13782137532. Its totient is φ = 13782137530.

The previous prime is 13782137513. The next prime is 13782137563. The reversal of 13782137531 is 13573128731.

Together with previous prime (13782137513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13782137531 - 2¹⁴ = 13782121147 is a prime.

It is a super-2 number, since 2×13782137531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13782137431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6891068765 + 6891068766.

It is an arithmetic number, because the mean of its divisors is an integer number (6891068766).

Almost surely, 2^13782137531 is an apocalyptic number.

13782137531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13782137531 is an equidigital number, since it uses as much as digits as its factorization.

13782137531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The spelling of 13782137531 in words is "thirteen billion, seven hundred eighty-two million, one hundred thirty-seven thousand, five hundred thirty-one".