164938857770 has 64 divisors (see below), whose sum is σ = 314062721280. Its totient is φ = 62291980800.

The previous prime is 164938857763. The next prime is 164938857851. The reversal of 164938857770 is 77758839461.

It is a junction number, because it is equal to n+sod(n) for n = 164938857697 and 164938857706.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1878755 + ... + 1964585.

It is an arithmetic number, because the mean of its divisors is an integer number (4907230020).

Almost surely, 2^164938857770 is an apocalyptic number.

164938857770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164938857770 is a deficient number, since it is larger than the sum of its proper divisors (149123863510).

164938857770 is a wasteful number, since it uses less digits than its factorization.

164938857770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86031.

The product of its (nonzero) digits is 71124480, while the sum is 65.

The spelling of 164938857770 in words is "one hundred sixty-four billion, nine hundred thirty-eight million, eight hundred fifty-seven thousand, seven hundred seventy".