172989896629 has 8 divisors (see below), whose sum is σ = 188721137088. Its totient is φ = 157259470560.

The previous prime is 172989896617. The next prime is 172989896659. The reversal of 172989896629 is 926698989271.

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

It is a cyclic number.

It is not a de Polignac number, because 172989896629 - 2¹³ = 172989888437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172989896609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293289 + ... + 657265.

It is an arithmetic number, because the mean of its divisors is an integer number (23590142136).

Almost surely, 2^172989896629 is an apocalyptic number.

It is an amenable number.

172989896629 is a deficient number, since it is larger than the sum of its proper divisors (15731240459).

172989896629 is a wasteful number, since it uses less digits than its factorization.

172989896629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407195.

The product of its digits is 423263232, while the sum is 76.

The spelling of 172989896629 in words is "one hundred seventy-two billion, nine hundred eighty-nine million, eight hundred ninety-six thousand, six hundred twenty-nine".