478436642507 has 4 divisors (see below), whose sum is σ = 478439945136. Its totient is φ = 478433339880.

The previous prime is 478436642501. The next prime is 478436642533. The reversal of 478436642507 is 705246634874.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478436642507 - 2⁴ = 478436642491 is a prime.

It is a super-3 number, since 3×478436642507³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478436642501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423544 + ... + 1727237.

It is an arithmetic number, because the mean of its divisors is an integer number (119609986284).

Almost surely, 2^478436642507 is an apocalyptic number.

478436642507 is a deficient number, since it is larger than the sum of its proper divisors (3302629).

478436642507 is a wasteful number, since it uses less digits than its factorization.

478436642507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302628.

The product of its (nonzero) digits is 27095040, while the sum is 56.

The spelling of 478436642507 in words is "four hundred seventy-eight billion, four hundred thirty-six million, six hundred forty-two thousand, five hundred seven".