164498158561 has 16 divisors (see below), whose sum is σ = 188940024000. Its totient is φ = 141641092800.

The previous prime is 164498158547. The next prime is 164498158567. The reversal of 164498158561 is 165851894461.

It is a cyclic number.

It is not a de Polignac number, because 164498158561 - 2²¹ = 164496061409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164498158496 and 164498158505.

It is not an unprimeable number, because it can be changed into a prime (164498158567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864231 + ... + 1037251.

It is an arithmetic number, because the mean of its divisors is an integer number (11808751500).

Almost surely, 2^164498158561 is an apocalyptic number.

164498158561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

164498158561 is a deficient number, since it is larger than the sum of its proper divisors (24441865439).

164498158561 is a wasteful number, since it uses less digits than its factorization.

164498158561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177600.

The product of its digits is 8294400, while the sum is 58.

The spelling of 164498158561 in words is "one hundred sixty-four billion, four hundred ninety-eight million, one hundred fifty-eight thousand, five hundred sixty-one".