305305020420156 has 36 divisors (see below), whose sum is σ = 772590384724704. Its totient is φ = 101656629547200.

The previous prime is 305305020420109. The next prime is 305305020420193. The reversal of 305305020420156 is 651024020503503.

305305020420156 is a `hidden beast` number, since 3 + 0 + 5 + 30 + 50 + 2 + 0 + 420 + 156 = 666.

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

It is a super-2 number, since 2×305305020420156² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 305305020420156.

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, 4654574785 + ... + 4654640376.

Almost surely, 2^{305305020420156} is an apocalyptic number.

305305020420156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

305305020420156 is an abundant number, since it is smaller than the sum of its proper divisors (467285364304548).

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

305305020420156 is a wasteful number, since it uses less digits than its factorization.

305305020420156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9309216082 (or 9309216077 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 305305020420156 its reverse (651024020503503), we get a palindrome (956329040923659).

The spelling of 305305020420156 in words is "three hundred five trillion, three hundred five billion, twenty million, four hundred twenty thousand, one hundred fifty-six".