172672090757 has 4 divisors (see below), whose sum is σ = 172673580876. Its totient is φ = 172670600640.

The previous prime is 172672090741. The next prime is 172672090823. The reversal of 172672090757 is 757090276271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49270236961 + 123401853796 = 221969^2 + 351286^2 .

It is a cyclic number.

It is not a de Polignac number, because 172672090757 - 2⁴ = 172672090741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172672090699 and 172672090708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172672092757) 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 3 ways as a sum of consecutive naturals, for example, 555098 + ... + 808379.

It is an arithmetic number, because the mean of its divisors is an integer number (43168395219).

Almost surely, 2^172672090757 is an apocalyptic number.

It is an amenable number.

172672090757 is a deficient number, since it is larger than the sum of its proper divisors (1490119).

172672090757 is a wasteful number, since it uses less digits than its factorization.

172672090757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490118.

The product of its (nonzero) digits is 2593080, while the sum is 53.

The spelling of 172672090757 in words is "one hundred seventy-two billion, six hundred seventy-two million, ninety thousand, seven hundred fifty-seven".