164435330550772 has 6 divisors (see below), whose sum is σ = 287761828463858. Its totient is φ = 82217665275384.

The previous prime is 164435330550763. The next prime is 164435330550773. The reversal of 164435330550772 is 277055033534461.

It can be written as a sum of positive squares in only one way, i.e., 163743911692516 + 691418858256 = 12796246^2 + 831516^2 .

It is a super-3 number, since 3×164435330550772³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164435330550773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20554416318843 + ... + 20554416318850.

Almost surely, 2^{164435330550772} is an apocalyptic number.

It is an amenable number.

164435330550772 is a deficient number, since it is larger than the sum of its proper divisors (123326497913086).

164435330550772 is a wasteful number, since it uses less digits than its factorization.

164435330550772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41108832637697 (or 41108832637695 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 55.

The spelling of 164435330550772 in words is "one hundred sixty-four trillion, four hundred thirty-five billion, three hundred thirty million, five hundred fifty thousand, seven hundred seventy-two".