172740771061 has 8 divisors (see below), whose sum is σ = 183306346560. Its totient is φ = 162429787872.

The previous prime is 172740771037. The next prime is 172740771067. The reversal of 172740771061 is 160177047271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172740771061 - 2¹⁵ = 172740738293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172740770999 and 172740771017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172740771067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63646680 + ... + 63649393.

It is an arithmetic number, because the mean of its divisors is an integer number (22913293320).

Almost surely, 2^172740771061 is an apocalyptic number.

It is an amenable number.

172740771061 is a deficient number, since it is larger than the sum of its proper divisors (10565575499).

172740771061 is a wasteful number, since it uses less digits than its factorization.

172740771061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127296155.

The product of its (nonzero) digits is 115248, while the sum is 43.

The spelling of 172740771061 in words is "one hundred seventy-two billion, seven hundred forty million, seven hundred seventy-one thousand, sixty-one".