172641600037 has 2 divisors, whose sum is σ = 172641600038. Its totient is φ = 172641600036.

The previous prime is 172641599989. The next prime is 172641600091. The reversal of 172641600037 is 730006146271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156182249601 + 16459350436 = 395199^2 + 128294^2 .

It is a cyclic number.

It is not a de Polignac number, because 172641600037 - 2³¹ = 170494116389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172641599969 and 172641600005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172641607037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86320800018 + 86320800019.

It is an arithmetic number, because the mean of its divisors is an integer number (86320800019).

Almost surely, 2^172641600037 is an apocalyptic number.

It is an amenable number.

172641600037 is a deficient number, since it is larger than the sum of its proper divisors (1).

172641600037 is an equidigital number, since it uses as much as digits as its factorization.

172641600037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

It can be divided in two parts, 17264 and 1600037, that added together give a triangular number (1617301 = T₁₇₉₈).

The spelling of 172641600037 in words is "one hundred seventy-two billion, six hundred forty-one million, six hundred thousand, thirty-seven".