64462202491 has 2 divisors, whose sum is σ = 64462202492. Its totient is φ = 64462202490.

The previous prime is 64462202461. The next prime is 64462202543. The reversal of 64462202491 is 19420226446.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64462202491 is a prime.

It is not a weakly prime, because it can be changed into another prime (64462202461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32231101245 + 32231101246.

It is an arithmetic number, because the mean of its divisors is an integer number (32231101246).

Almost surely, 2^64462202491 is an apocalyptic number.

64462202491 is a deficient number, since it is larger than the sum of its proper divisors (1).

64462202491 is an equidigital number, since it uses as much as digits as its factorization.

64462202491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 64462202491 in words is "sixty-four billion, four hundred sixty-two million, two hundred two thousand, four hundred ninety-one".