172237387052 has 6 divisors (see below), whose sum is σ = 301415427348. Its totient is φ = 86118693524.

The previous prime is 172237386947. The next prime is 172237387057. The reversal of 172237387052 is 250783732271.

It is a junction number, because it is equal to n+sod(n) for n = 172237386988 and 172237387006.

It is not an unprimeable number, because it can be changed into a prime (172237387057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21529673378 + ... + 21529673385.

It is an arithmetic number, because the mean of its divisors is an integer number (50235904558).

Almost surely, 2^172237387052 is an apocalyptic number.

It is an amenable number.

172237387052 is a deficient number, since it is larger than the sum of its proper divisors (129178040296).

172237387052 is a wasteful number, since it uses less digits than its factorization.

172237387052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43059346767 (or 43059346765 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 172237387052 in words is "one hundred seventy-two billion, two hundred thirty-seven million, three hundred eighty-seven thousand, fifty-two".