64831605427 has 2 divisors, whose sum is σ = 64831605428. Its totient is φ = 64831605426.

The previous prime is 64831605341. The next prime is 64831605431. The reversal of 64831605427 is 72450613846.

64831605427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64831605427 - 2²³ = 64823216819 is a prime.

It is not a weakly prime, because it can be changed into another prime (64831645427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32415802713 + 32415802714.

It is an arithmetic number, because the mean of its divisors is an integer number (32415802714).

Almost surely, 2^64831605427 is an apocalyptic number.

64831605427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64831605427 is an equidigital number, since it uses as much as digits as its factorization.

64831605427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 46.

It can be divided in two parts, 6483 and 1605427, that added together give a triangular number (1611910 = T₁₇₉₅).

The spelling of 64831605427 in words is "sixty-four billion, eight hundred thirty-one million, six hundred five thousand, four hundred twenty-seven".