30155440545 has 24 divisors (see below), whose sum is σ = 53485001856. Its totient is φ = 15708879648.

The previous prime is 30155440519. The next prime is 30155440583. The reversal of 30155440545 is 54504455103.

It is not a de Polignac number, because 30155440545 - 2⁹ = 30155440033 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, 7790169 + ... + 7794038.

It is an arithmetic number, because the mean of its divisors is an integer number (2228541744).

Almost surely, 2^30155440545 is an apocalyptic number.

It is an amenable number.

30155440545 is a deficient number, since it is larger than the sum of its proper divisors (23329561311).

30155440545 is a wasteful number, since it uses less digits than its factorization.

30155440545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15584261 (or 15584258 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 30155440545 its reverse (54504455103), we get a palindrome (84659895648).

The spelling of 30155440545 in words is "thirty billion, one hundred fifty-five million, four hundred forty thousand, five hundred forty-five".