172397778962 has 8 divisors (see below), whose sum is σ = 258608156976. Its totient is φ = 86195059972.

The previous prime is 172397778929. The next prime is 172397778979. The reversal of 172397778962 is 269877793271.

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

It is a junction number, because it is equal to n+sod(n) for n = 172397778892 and 172397778901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1858148 + ... + 1948719.

It is an arithmetic number, because the mean of its divisors is an integer number (32326019622).

Almost surely, 2^172397778962 is an apocalyptic number.

172397778962 is a deficient number, since it is larger than the sum of its proper divisors (86210378014).

172397778962 is a wasteful number, since it uses less digits than its factorization.

172397778962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829512.

The product of its digits is 112021056, while the sum is 68.

The spelling of 172397778962 in words is "one hundred seventy-two billion, three hundred ninety-seven million, seven hundred seventy-eight thousand, nine hundred sixty-two".