20343755542 has 32 divisors (see below), whose sum is σ = 34312823424. Its totient is φ = 8966126400.

The previous prime is 20343755527. The next prime is 20343755543. The reversal of 20343755542 is 24555734302.

It is a junction number, because it is equal to n+sod(n) for n = 20343755495 and 20343755504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343755543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51117 + ... + 208087.

It is an arithmetic number, because the mean of its divisors is an integer number (1072275732).

Almost surely, 2^20343755542 is an apocalyptic number.

20343755542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20343755542 is a deficient number, since it is larger than the sum of its proper divisors (13969067882).

20343755542 is a wasteful number, since it uses less digits than its factorization.

20343755542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157164.

The product of its (nonzero) digits is 504000, while the sum is 40.

The spelling of 20343755542 in words is "twenty billion, three hundred forty-three million, seven hundred fifty-five thousand, five hundred forty-two".