305551222040 has 16 divisors (see below), whose sum is σ = 687490249680. Its totient is φ = 122220488800.

The previous prime is 305551222033. The next prime is 305551222061. The reversal of 305551222040 is 40222155503.

It is a junction number, because it is equal to n+sod(n) for n = 305551221994 and 305551222012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3819390236 + ... + 3819390315.

It is an arithmetic number, because the mean of its divisors is an integer number (42968140605).

Almost surely, 2^305551222040 is an apocalyptic number.

It is an amenable number.

305551222040 is an abundant number, since it is smaller than the sum of its proper divisors (381939027640).

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

305551222040 is a wasteful number, since it uses less digits than its factorization.

305551222040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638780562 (or 7638780558 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 305551222040 its reverse (40222155503), we get a palindrome (345773377543).

The spelling of 305551222040 in words is "three hundred five billion, five hundred fifty-one million, two hundred twenty-two thousand, forty".