420618661308 has 36 divisors (see below), whose sum is σ = 1076689126240. Its totient is φ = 138431457216.

The previous prime is 420618661297. The next prime is 420618661313. The reversal of 420618661308 is 803166816024.

420618661308 is a `hidden beast` number, since 4 + 20 + 6 + 1 + 8 + 6 + 613 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73945585 + ... + 73951272.

Almost surely, 2^420618661308 is an apocalyptic number.

It is an amenable number.

420618661308 is an abundant number, since it is smaller than the sum of its proper divisors (656070464932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420618661308 is a wasteful number, since it uses less digits than its factorization.

420618661308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147896946 (or 147896941 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 420618661308 in words is "four hundred twenty billion, six hundred eighteen million, six hundred sixty-one thousand, three hundred eight".