164827253545 has 4 divisors (see below), whose sum is σ = 197792704260. Its totient is φ = 131861802832.

The previous prime is 164827253537. The next prime is 164827253551. The reversal of 164827253545 is 545352728461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545352728461 = 36529 ⋅14929309.

It can be written as a sum of positive squares in 2 ways, for example, as 124521471376 + 40305782169 = 352876^2 + 200763^2 .

It is a cyclic number.

It is not a de Polignac number, because 164827253545 - 2³ = 164827253537 is a prime.

It is a super-2 number, since 2×164827253545² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164827253492 and 164827253501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16482725350 + ... + 16482725359.

It is an arithmetic number, because the mean of its divisors is an integer number (49448176065).

Almost surely, 2^164827253545 is an apocalyptic number.

It is an amenable number.

164827253545 is a deficient number, since it is larger than the sum of its proper divisors (32965450715).

164827253545 is an equidigital number, since it uses as much as digits as its factorization.

164827253545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32965450714.

The product of its digits is 8064000, while the sum is 52.

The spelling of 164827253545 in words is "one hundred sixty-four billion, eight hundred twenty-seven million, two hundred fifty-three thousand, five hundred forty-five".