20543396350 has 24 divisors (see below), whose sum is σ = 38581704720. Its totient is φ = 8137576320.

The previous prime is 20543396311. The next prime is 20543396371. The reversal of 20543396350 is 5369334502.

It is a super-2 number, since 2×20543396350² (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 11 ways as a sum of consecutive naturals, for example, 1989355 + ... + 1999654.

It is an arithmetic number, because the mean of its divisors is an integer number (1607571030).

Almost surely, 2^20543396350 is an apocalyptic number.

20543396350 is a deficient number, since it is larger than the sum of its proper divisors (18038308370).

20543396350 is a wasteful number, since it uses less digits than its factorization.

20543396350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989124 (or 3989119 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 20543396350 in words is "twenty billion, five hundred forty-three million, three hundred ninety-six thousand, three hundred fifty".