172306748481 has 16 divisors (see below), whose sum is σ = 262635091968. Its totient is φ = 98433838800.

The previous prime is 172306748437. The next prime is 172306748489. The reversal of 172306748481 is 184847603271.

It is not a de Polignac number, because 172306748481 - 2¹⁴ = 172306732097 is a prime.

It is a super-2 number, since 2×172306748481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172306748489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053615 + ... + 1206116.

It is an arithmetic number, because the mean of its divisors is an integer number (16414693248).

Almost surely, 2^172306748481 is an apocalyptic number.

It is an amenable number.

172306748481 is a deficient number, since it is larger than the sum of its proper divisors (90328343487).

172306748481 is a wasteful number, since it uses less digits than its factorization.

172306748481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263372.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 172306748481 in words is "one hundred seventy-two billion, three hundred six million, seven hundred forty-eight thousand, four hundred eighty-one".