30402355545 has 24 divisors (see below), whose sum is σ = 54121673736. Its totient is φ = 15776356608.

The previous prime is 30402355519. The next prime is 30402355579. The reversal of 30402355545 is 54555320403.

30402355545 is a `hidden beast` number, since 3 + 0 + 40 + 23 + 55 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3666181401 + 26736174144 = 60549^2 + 163512^2 .

It is not a de Polignac number, because 30402355545 - 2⁶ = 30402355481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9128172 + ... + 9131501.

It is an arithmetic number, because the mean of its divisors is an integer number (2255069739).

Almost surely, 2^30402355545 is an apocalyptic number.

It is an amenable number.

30402355545 is a deficient number, since it is larger than the sum of its proper divisors (23719318191).

30402355545 is a wasteful number, since it uses less digits than its factorization.

30402355545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18259721 (or 18259718 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

Adding to 30402355545 its reverse (54555320403), we get a palindrome (84957675948).

The spelling of 30402355545 in words is "thirty billion, four hundred two million, three hundred fifty-five thousand, five hundred forty-five".