172152060666651 has 128 divisors (see below), whose sum is σ = 290273692262400. Its totient is φ = 99961630070400.

The previous prime is 172152060666637. The next prime is 172152060666653. The reversal of 172152060666651 is 156666060251271.

It is not a de Polignac number, because 172152060666651 - 2¹⁴ = 172152060650267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172152060666653) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13826357976 + ... + 13826370426.

It is an arithmetic number, because the mean of its divisors is an integer number (2267763220800).

Almost surely, 2^{172152060666651} is an apocalyptic number.

172152060666651 is a deficient number, since it is larger than the sum of its proper divisors (118121631595749).

172152060666651 is a wasteful number, since it uses less digits than its factorization.

172152060666651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20638 (or 20632 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 172152060666651 in words is "one hundred seventy-two trillion, one hundred fifty-two billion, sixty million, six hundred sixty-six thousand, six hundred fifty-one".