164415464951 has 4 divisors (see below), whose sum is σ = 167110800504. Its totient is φ = 161720129400.

The previous prime is 164415464893. The next prime is 164415464959. The reversal of 164415464951 is 159464514461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159464514461 = 7 ⋅22780644923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164415464951 is a prime.

It is a super-3 number, since 3×164415464951³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164415464951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164415464959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347667685 + ... + 1347667806.

It is an arithmetic number, because the mean of its divisors is an integer number (41777700126).

Almost surely, 2^164415464951 is an apocalyptic number.

164415464951 is a deficient number, since it is larger than the sum of its proper divisors (2695335553).

164415464951 is an equidigital number, since it uses as much as digits as its factorization.

164415464951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695335552.

The product of its digits is 2073600, while the sum is 50.

The spelling of 164415464951 in words is "one hundred sixty-four billion, four hundred fifteen million, four hundred sixty-four thousand, nine hundred fifty-one".