20122705492 has 24 divisors (see below), whose sum is σ = 36379445760. Its totient is φ = 9729091680.

The previous prime is 20122705457. The next prime is 20122705501. The reversal of 20122705492 is 29450722102.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94809 + ... + 221887.

It is an arithmetic number, because the mean of its divisors is an integer number (1515810240).

Almost surely, 2^20122705492 is an apocalyptic number.

It is an amenable number.

20122705492 is a deficient number, since it is larger than the sum of its proper divisors (16256740268).

20122705492 is a wasteful number, since it uses less digits than its factorization.

20122705492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128391 (or 128389 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20122705492 in words is "twenty billion, one hundred twenty-two million, seven hundred five thousand, four hundred ninety-two".