30143953644 has 48 divisors (see below), whose sum is σ = 84614611200. Its totient is φ = 8159265216.

The previous prime is 30143953639. The next prime is 30143953649. The reversal of 30143953644 is 44635934103.

It is an interprime number because it is at equal distance from previous prime (30143953639) and next prime (30143953649).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 30143953596 and 30143953605.

It is not an unprimeable number, because it can be changed into a prime (30143953649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9441999 + ... + 9445190.

It is an arithmetic number, because the mean of its divisors is an integer number (1762804400).

Almost surely, 2^30143953644 is an apocalyptic number.

It is an amenable number.

30143953644 is an abundant number, since it is smaller than the sum of its proper divisors (54470657556).

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

30143953644 is a wasteful number, since it uses less digits than its factorization.

30143953644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18887222 (or 18887220 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 30143953644 in words is "thirty billion, one hundred forty-three million, nine hundred fifty-three thousand, six hundred forty-four".