20040518701 has 16 divisors (see below), whose sum is σ = 23744730240. Its totient is φ = 16549202880.

The previous prime is 20040518657. The next prime is 20040518749. The reversal of 20040518701 is 10781504002.

It is a de Polignac number, because none of the positive numbers 2^k-20040518701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20040518701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040518761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13491 + ... + 200656.

It is an arithmetic number, because the mean of its divisors is an integer number (1484045640).

Almost surely, 2^20040518701 is an apocalyptic number.

It is an amenable number.

20040518701 is a deficient number, since it is larger than the sum of its proper divisors (3704211539).

20040518701 is a wasteful number, since it uses less digits than its factorization.

20040518701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214644.

The product of its (nonzero) digits is 2240, while the sum is 28.

The spelling of 20040518701 in words is "twenty billion, forty million, five hundred eighteen thousand, seven hundred one".