420179251969 has 4 divisors (see below), whose sum is σ = 423487750144. Its totient is φ = 416870753796.

The previous prime is 420179251951. The next prime is 420179252023. The reversal of 420179251969 is 969152971024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420179251969 - 2¹⁷ = 420179120897 is a prime.

It is a super-2 number, since 2×420179251969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420179251769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654248897 + ... + 1654249150.

It is an arithmetic number, because the mean of its divisors is an integer number (105871937536).

Almost surely, 2^420179251969 is an apocalyptic number.

It is an amenable number.

420179251969 is a deficient number, since it is larger than the sum of its proper divisors (3308498175).

420179251969 is a wasteful number, since it uses less digits than its factorization.

420179251969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308498174.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 420179251969 in words is "four hundred twenty billion, one hundred seventy-nine million, two hundred fifty-one thousand, nine hundred sixty-nine".