2478172375429 has 8 divisors (see below), whose sum is σ = 2539374219648. Its totient is φ = 2417006655840.

The previous prime is 2478172375381. The next prime is 2478172375457. The reversal of 2478172375429 is 9245732718742.

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 2478172375429 - 2¹⁵ = 2478172342661 is a prime.

It is a super-2 number, since 2×2478172375429² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478172375729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8892237 + ... + 9166690.

It is an arithmetic number, because the mean of its divisors is an integer number (317421777456).

Almost surely, 2^{2478172375429} is an apocalyptic number.

It is an amenable number.

2478172375429 is a deficient number, since it is larger than the sum of its proper divisors (61201844219).

2478172375429 is a wasteful number, since it uses less digits than its factorization.

2478172375429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18062315.

The product of its digits is 47416320, while the sum is 61.

The spelling of 2478172375429 in words is "two trillion, four hundred seventy-eight billion, one hundred seventy-two million, three hundred seventy-five thousand, four hundred twenty-nine".