20543312692 has 24 divisors (see below), whose sum is σ = 41262975936. Its totient is φ = 8766487488.

The previous prime is 20543312689. The next prime is 20543312723. The reversal of 20543312692 is 29621334502.

It is a super-2 number, since 2×20543312692² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1567918 + ... + 1580965.

It is an arithmetic number, because the mean of its divisors is an integer number (1719290664).

Almost surely, 2^20543312692 is an apocalyptic number.

It is an amenable number.

20543312692 is an abundant number, since it is smaller than the sum of its proper divisors (20719663244).

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

20543312692 is a wasteful number, since it uses less digits than its factorization.

20543312692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149127 (or 3149125 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 20543312692 in words is "twenty billion, five hundred forty-three million, three hundred twelve thousand, six hundred ninety-two".