172697764530 has 64 divisors (see below), whose sum is σ = 428127768576. Its totient is φ = 44537688000.

The previous prime is 172697764529. The next prime is 172697764567. The reversal of 172697764530 is 35467796271.

172697764530 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172697764530² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1363185 + ... + 1484475.

It is an arithmetic number, because the mean of its divisors is an integer number (6689496384).

Almost surely, 2^172697764530 is an apocalyptic number.

172697764530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172697764530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214063884288).

172697764530 is an abundant number, since it is smaller than the sum of its proper divisors (255430004046).

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

172697764530 is a wasteful number, since it uses less digits than its factorization.

172697764530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122863.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The spelling of 172697764530 in words is "one hundred seventy-two billion, six hundred ninety-seven million, seven hundred sixty-four thousand, five hundred thirty".