20030145156 has 96 divisors (see below), whose sum is σ = 59580084480. Its totient is φ = 5700575232.

The previous prime is 20030145131. The next prime is 20030145193. The reversal of 20030145156 is 65154103002.

20030145156 is a `hidden beast` number, since 200 + 3 + 0 + 1 + 451 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142746 + ... + 245838.

It is an arithmetic number, because the mean of its divisors is an integer number (620625880).

Almost surely, 2^20030145156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20030145156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29790042240).

20030145156 is an abundant number, since it is smaller than the sum of its proper divisors (39549939324).

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

20030145156 is a wasteful number, since it uses less digits than its factorization.

20030145156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103370 (or 103362 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20030145156 its reverse (65154103002), we get a palindrome (85184248158).

The spelling of 20030145156 in words is "twenty billion, thirty million, one hundred forty-five thousand, one hundred fifty-six".