20552435131 has 8 divisors (see below), whose sum is σ = 20751246144. Its totient is φ = 20353749000.

The previous prime is 20552435129. The next prime is 20552435171. The reversal of 20552435131 is 13153425502.

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

It is a cyclic number.

It is not a de Polignac number, because 20552435131 - 2¹ = 20552435129 is a prime.

It is a super-2 number, since 2×20552435131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20552435093 and 20552435102.

It is not an unprimeable number, because it can be changed into a prime (20552435171) 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, 318316 + ... + 377398.

It is an arithmetic number, because the mean of its divisors is an integer number (2593905768).

Almost surely, 2^20552435131 is an apocalyptic number.

20552435131 is a deficient number, since it is larger than the sum of its proper divisors (198811013).

20552435131 is a wasteful number, since it uses less digits than its factorization.

20552435131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62441.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 20552435131 in words is "twenty billion, five hundred fifty-two million, four hundred thirty-five thousand, one hundred thirty-one".