20552150643 has 8 divisors (see below), whose sum is σ = 27504738000. Its totient is φ = 13650498528.

The previous prime is 20552150623. The next prime is 20552150677. The reversal of 20552150643 is 34605125502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20552150643 - 2¹⁰ = 20552149619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20552150623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12732868 + ... + 12734481.

It is an arithmetic number, because the mean of its divisors is an integer number (3438092250).

Almost surely, 2^20552150643 is an apocalyptic number.

20552150643 is a deficient number, since it is larger than the sum of its proper divisors (6952587357).

20552150643 is a wasteful number, since it uses less digits than its factorization.

20552150643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25467621.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 20552150643 in words is "twenty billion, five hundred fifty-two million, one hundred fifty thousand, six hundred forty-three".