172740514647 has 16 divisors (see below), whose sum is σ = 237189312000. Its totient is φ = 111775445184.

The previous prime is 172740514621. The next prime is 172740514669. The reversal of 172740514647 is 746415047271.

It is a happy number.

It is not a de Polignac number, because 172740514647 - 2¹¹ = 172740512599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172740514596 and 172740514605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172740514607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6162822 + ... + 6190787.

It is an arithmetic number, because the mean of its divisors is an integer number (14824332000).

Almost surely, 2^172740514647 is an apocalyptic number.

172740514647 is a deficient number, since it is larger than the sum of its proper divisors (64448797353).

172740514647 is a wasteful number, since it uses less digits than its factorization.

172740514647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12353750.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 172740514647 in words is "one hundred seventy-two billion, seven hundred forty million, five hundred fourteen thousand, six hundred forty-seven".