164612278591451 has 2 divisors, whose sum is σ = 164612278591452. Its totient is φ = 164612278591450.

The previous prime is 164612278591441. The next prime is 164612278591499. The reversal of 164612278591451 is 154195872216461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164612278591451 - 2²² = 164612274397147 is a prime.

It is not a weakly prime, because it can be changed into another prime (164612278591441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82306139295725 + 82306139295726.

It is an arithmetic number, because the mean of its divisors is an integer number (82306139295726).

Almost surely, 2^{164612278591451} is an apocalyptic number.

164612278591451 is a deficient number, since it is larger than the sum of its proper divisors (1).

164612278591451 is an equidigital number, since it uses as much as digits as its factorization.

164612278591451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 62.

The spelling of 164612278591451 in words is "one hundred sixty-four trillion, six hundred twelve billion, two hundred seventy-eight million, five hundred ninety-one thousand, four hundred fifty-one".