172634360421 has 8 divisors (see below), whose sum is σ = 230587993440. Its totient is φ = 114885150512.

The previous prime is 172634360387. The next prime is 172634360473. The reversal of 172634360421 is 124063436271.

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 172634360421 - 2²⁷ = 172500142693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172634360421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172634360621) 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, 51103806 + ... + 51107183.

It is an arithmetic number, because the mean of its divisors is an integer number (28823499180).

Almost surely, 2^172634360421 is an apocalyptic number.

It is an amenable number.

172634360421 is a deficient number, since it is larger than the sum of its proper divisors (57953633019).

172634360421 is a wasteful number, since it uses less digits than its factorization.

172634360421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102211555.

The product of its (nonzero) digits is 145152, while the sum is 39.

Adding to 172634360421 its reverse (124063436271), we get a palindrome (296697796692).

The spelling of 172634360421 in words is "one hundred seventy-two billion, six hundred thirty-four million, three hundred sixty thousand, four hundred twenty-one".