20018513141 has 8 divisors (see below), whose sum is σ = 21839406624. Its totient is φ = 18197791120.

The previous prime is 20018513071. The next prime is 20018513161. The reversal of 20018513141 is 14131581002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20018513141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20018513141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20018513161) 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, 402455 + ... + 449451.

It is an arithmetic number, because the mean of its divisors is an integer number (2729925828).

Almost surely, 2^20018513141 is an apocalyptic number.

It is an amenable number.

20018513141 is a deficient number, since it is larger than the sum of its proper divisors (1820893483).

20018513141 is a wasteful number, since it uses less digits than its factorization.

20018513141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85731.

The product of its (nonzero) digits is 960, while the sum is 26.

The spelling of 20018513141 in words is "twenty billion, eighteen million, five hundred thirteen thousand, one hundred forty-one".