30123404553 has 16 divisors (see below), whose sum is σ = 45000075456. Its totient is φ = 17763186240.

The previous prime is 30123404477. The next prime is 30123404567. The reversal of 30123404553 is 35540432103.

It is not a de Polignac number, because 30123404553 - 2²¹ = 30121307401 is a prime.

It is a super-2 number, since 2×30123404553² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30123404553.

It is not an unprimeable number, because it can be changed into a prime (30123404153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12334326 + ... + 12336767.

It is an arithmetic number, because the mean of its divisors is an integer number (2812504716).

Almost surely, 2^30123404553 is an apocalyptic number.

30123404553 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30123404553 is a deficient number, since it is larger than the sum of its proper divisors (14876670903).

30123404553 is a wasteful number, since it uses less digits than its factorization.

30123404553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24671144.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 30123404553 its reverse (35540432103), we get a palindrome (65663836656).

The spelling of 30123404553 in words is "thirty billion, one hundred twenty-three million, four hundred four thousand, five hundred fifty-three".