20012541406 has 64 divisors (see below), whose sum is σ = 38252523456. Its totient is φ = 7710105600.

The previous prime is 20012541361. The next prime is 20012541421. The reversal of 20012541406 is 60414521002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149146 + ... + 249538.

It is an arithmetic number, because the mean of its divisors is an integer number (597695679).

Almost surely, 2^20012541406 is an apocalyptic number.

20012541406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20012541406 is a deficient number, since it is larger than the sum of its proper divisors (18239982050).

20012541406 is a wasteful number, since it uses less digits than its factorization.

20012541406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100477.

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 20012541406 in words is "twenty billion, twelve million, five hundred forty-one thousand, four hundred six".