420787455578 has 8 divisors (see below), whose sum is σ = 721349923872. Its totient is φ = 180337480956.

The previous prime is 420787455577. The next prime is 420787455581. The reversal of 420787455578 is 875554787024.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 420787455578.

It is not an unprimeable number, because it can be changed into a prime (420787455577) 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 3 ways as a sum of consecutive naturals, for example, 15028123400 + ... + 15028123427.

It is an arithmetic number, because the mean of its divisors is an integer number (90168740484).

Almost surely, 2^420787455578 is an apocalyptic number.

420787455578 is a deficient number, since it is larger than the sum of its proper divisors (300562468294).

420787455578 is a wasteful number, since it uses less digits than its factorization.

420787455578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30056246836.

The product of its (nonzero) digits is 87808000, while the sum is 62.

The spelling of 420787455578 in words is "four hundred twenty billion, seven hundred eighty-seven million, four hundred fifty-five thousand, five hundred seventy-eight".