20415544101 has 16 divisors (see below), whose sum is σ = 30414225600. Its totient is φ = 13534323984.

The previous prime is 20415544049. The next prime is 20415544117. The reversal of 20415544101 is 10144551402.

20415544101 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 554 + 4 + 101 = 666.

It is not a de Polignac number, because 20415544101 - 2¹¹ = 20415542053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20415544801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2107266 + ... + 2116931.

It is an arithmetic number, because the mean of its divisors is an integer number (1900889100).

Almost surely, 2^20415544101 is an apocalyptic number.

It is an amenable number.

20415544101 is a deficient number, since it is larger than the sum of its proper divisors (9998681499).

20415544101 is a wasteful number, since it uses less digits than its factorization.

20415544101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224385 (or 4224379 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 20415544101 in words is "twenty billion, four hundred fifteen million, five hundred forty-four thousand, one hundred one".