164742569802 has 12 divisors (see below), whose sum is σ = 356942234610. Its totient is φ = 54914189928.

The previous prime is 164742569759. The next prime is 164742569809. The reversal of 164742569802 is 208965247461.

164742569802 is a `hidden beast` number, since 1 + 6 + 4 + 74 + 2 + 569 + 8 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 144994169961 + 19748399841 = 380781^2 + 140529^2 .

It is a super-2 number, since 2×164742569802² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164742569809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4576182477 + ... + 4576182512.

Almost surely, 2^164742569802 is an apocalyptic number.

164742569802 is an abundant number, since it is smaller than the sum of its proper divisors (192199664808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164742569802 is a wasteful number, since it uses less digits than its factorization.

164742569802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152364997 (or 9152364994 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 164742569802 in words is "one hundred sixty-four billion, seven hundred forty-two million, five hundred sixty-nine thousand, eight hundred two".