20155332043 has 64 divisors (see below), whose sum is σ = 26121139200. Its totient is φ = 15415008000.

The previous prime is 20155331981. The next prime is 20155332089. The reversal of 20155332043 is 34023355102.

It is not a de Polignac number, because 20155332043 - 2¹⁷ = 20155200971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20155332143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86503455 + ... + 86503687.

It is an arithmetic number, because the mean of its divisors is an integer number (408142800).

Almost surely, 2^20155332043 is an apocalyptic number.

20155332043 is a deficient number, since it is larger than the sum of its proper divisors (5965807157).

20155332043 is a wasteful number, since it uses less digits than its factorization.

20155332043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20155332043 its reverse (34023355102), we get a palindrome (54178687145).

The spelling of 20155332043 in words is "twenty billion, one hundred fifty-five million, three hundred thirty-two thousand, forty-three".