164514970691 has 2 divisors, whose sum is σ = 164514970692. Its totient is φ = 164514970690.

The previous prime is 164514970681. The next prime is 164514970727. The reversal of 164514970691 is 196079415461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164514970691 - 2²⁶ = 164447861827 is a prime.

It is not a weakly prime, because it can be changed into another prime (164514970661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82257485345 + 82257485346.

It is an arithmetic number, because the mean of its divisors is an integer number (82257485346).

Almost surely, 2^164514970691 is an apocalyptic number.

164514970691 is a deficient number, since it is larger than the sum of its proper divisors (1).

164514970691 is an equidigital number, since it uses as much as digits as its factorization.

164514970691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 164514970691 in words is "one hundred sixty-four billion, five hundred fourteen million, nine hundred seventy thousand, six hundred ninety-one".