20461331132146 has 16 divisors (see below), whose sum is σ = 32042468752704. Its totient is φ = 9780953698384.

The previous prime is 20461331132141. The next prime is 20461331132227. The reversal of 20461331132146 is 64123113316402.

It is a super-2 number, since 2×20461331132146² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20461331132141) 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, 111278080 + ... + 111461803.

It is an arithmetic number, because the mean of its divisors is an integer number (2002654297044).

Almost surely, 2^{20461331132146} is an apocalyptic number.

20461331132146 is a deficient number, since it is larger than the sum of its proper divisors (11581137620558).

20461331132146 is a wasteful number, since it uses less digits than its factorization.

20461331132146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222741905.

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 20461331132146 its reverse (64123113316402), we get a palindrome (84584444448548).

The spelling of 20461331132146 in words is "twenty trillion, four hundred sixty-one billion, three hundred thirty-one million, one hundred thirty-two thousand, one hundred forty-six".