20393895542 has 8 divisors (see below), whose sum is σ = 31417622976. Its totient is φ = 9921354552.

The previous prime is 20393895541. The next prime is 20393895559. The reversal of 20393895542 is 24559839302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20393895541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137796518 + ... + 137796665.

It is an arithmetic number, because the mean of its divisors is an integer number (3927202872).

Almost surely, 2^20393895542 is an apocalyptic number.

20393895542 is a deficient number, since it is larger than the sum of its proper divisors (11023727434).

20393895542 is a wasteful number, since it uses less digits than its factorization.

20393895542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275593222.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 20393895542 in words is "twenty billion, three hundred ninety-three million, eight hundred ninety-five thousand, five hundred forty-two".