164542506254 has 16 divisors (see below), whose sum is σ = 291799519200. Its totient is φ = 68086554144.

The previous prime is 164542506251. The next prime is 164542506257. The reversal of 164542506254 is 452605245461.

It is an interprime number because it is at equal distance from previous prime (164542506251) and next prime (164542506257).

It is a super-2 number, since 2×164542506254² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164542506251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202638149 + ... + 202638960.

It is an arithmetic number, because the mean of its divisors is an integer number (18237469950).

Almost surely, 2^164542506254 is an apocalyptic number.

164542506254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

164542506254 is a deficient number, since it is larger than the sum of its proper divisors (127257012946).

164542506254 is a wasteful number, since it uses less digits than its factorization.

164542506254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405277147.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 164542506254 in words is "one hundred sixty-four billion, five hundred forty-two million, five hundred six thousand, two hundred fifty-four".