164660326530 has 64 divisors (see below), whose sum is σ = 451696877568. Its totient is φ = 37631885760.

The previous prime is 164660326529. The next prime is 164660326553. The reversal of 164660326530 is 35623066461.

It is a happy number.

It is a super-2 number, since 2×164660326530² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1773975 + ... + 1864485.

It is an arithmetic number, because the mean of its divisors is an integer number (7057763712).

Almost surely, 2^164660326530 is an apocalyptic number.

164660326530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164660326530 is an abundant number, since it is smaller than the sum of its proper divisors (287036551038).

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

164660326530 is a wasteful number, since it uses less digits than its factorization.

164660326530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99191.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 164660326530 in words is "one hundred sixty-four billion, six hundred sixty million, three hundred twenty-six thousand, five hundred thirty".