172275671557 has 16 divisors (see below), whose sum is σ = 194622186240. Its totient is φ = 151140225600.

The previous prime is 172275671549. The next prime is 172275671563. The reversal of 172275671557 is 755176572271.

It is a cyclic number.

It is not a de Polignac number, because 172275671557 - 2³ = 172275671549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172275671498 and 172275671507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172275671257) 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, 2386557 + ... + 2457682.

It is an arithmetic number, because the mean of its divisors is an integer number (12163886640).

Almost surely, 2^172275671557 is an apocalyptic number.

It is an amenable number.

172275671557 is a deficient number, since it is larger than the sum of its proper divisors (22346514683).

172275671557 is a wasteful number, since it uses less digits than its factorization.

172275671557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844364.

The product of its digits is 7203000, while the sum is 55.

The spelling of 172275671557 in words is "one hundred seventy-two billion, two hundred seventy-five million, six hundred seventy-one thousand, five hundred fifty-seven".