20115635541 has 16 divisors (see below), whose sum is σ = 26998692864. Its totient is φ = 13321582704.

The previous prime is 20115635531. The next prime is 20115635569. The reversal of 20115635541 is 14553651102.

It is not a de Polignac number, because 20115635541 - 2²⁵ = 20082081109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115635531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109350 + ... + 1127336.

It is an arithmetic number, because the mean of its divisors is an integer number (1687418304).

Almost surely, 2^20115635541 is an apocalyptic number.

It is an amenable number.

20115635541 is a deficient number, since it is larger than the sum of its proper divisors (6883057323).

20115635541 is a wasteful number, since it uses less digits than its factorization.

20115635541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20440.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 20115635541 in words is "twenty billion, one hundred fifteen million, six hundred thirty-five thousand, five hundred forty-one".