6445846540031 has 2 divisors, whose sum is σ = 6445846540032. Its totient is φ = 6445846540030.

The previous prime is 6445846539973. The next prime is 6445846540103. The reversal of 6445846540031 is 1300456485446.

Together with next prime (6445846540103) 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 a de Polignac number, because none of the positive numbers 2^k-6445846540031 is a prime.

It is a super-2 number, since 2×6445846540031² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6445846546031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222923270015 + 3222923270016.

It is an arithmetic number, because the mean of its divisors is an integer number (3222923270016).

Almost surely, 2^{6445846540031} is an apocalyptic number.

6445846540031 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445846540031 is an equidigital number, since it uses as much as digits as its factorization.

6445846540031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 6445846540031 in words is "six trillion, four hundred forty-five billion, eight hundred forty-six million, five hundred forty thousand, thirty-one".