20711202542 has 32 divisors (see below), whose sum is σ = 32740653600. Its totient is φ = 9812170368.

The previous prime is 20711202509. The next prime is 20711202649. The reversal of 20711202542 is 24520211702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035428 + ... + 1055240.

It is an arithmetic number, because the mean of its divisors is an integer number (1023145425).

Almost surely, 2^20711202542 is an apocalyptic number.

20711202542 is a deficient number, since it is larger than the sum of its proper divisors (12029451058).

20711202542 is a wasteful number, since it uses less digits than its factorization.

20711202542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20180.

The product of its (nonzero) digits is 2240, while the sum is 26.

The spelling of 20711202542 in words is "twenty billion, seven hundred eleven million, two hundred two thousand, five hundred forty-two".