20126334277542 has 24 divisors (see below), whose sum is σ = 42759755181576. Its totient is φ = 6314144086528.

The previous prime is 20126334277537. The next prime is 20126334277603. The reversal of 20126334277542 is 24577243362102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20126334277491 and 20126334277500.

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 11 ways as a sum of consecutive naturals, for example, 5803439523 + ... + 5803442990.

It is an arithmetic number, because the mean of its divisors is an integer number (1781656465899).

Almost surely, 2^{20126334277542} is an apocalyptic number.

20126334277542 is an abundant number, since it is smaller than the sum of its proper divisors (22633420904034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20126334277542 is a wasteful number, since it uses less digits than its factorization.

20126334277542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11606882552 (or 11606882535 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 20126334277542 in words is "twenty trillion, one hundred twenty-six billion, three hundred thirty-four million, two hundred seventy-seven thousand, five hundred forty-two".