20151543342 has 16 divisors (see below), whose sum is σ = 46060670592. Its totient is φ = 5757583800.

The previous prime is 20151543323. The next prime is 20151543343. The reversal of 20151543342 is 24334515102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151543343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239899284 + ... + 239899367.

It is an arithmetic number, because the mean of its divisors is an integer number (2878791912).

Almost surely, 2^20151543342 is an apocalyptic number.

20151543342 is an abundant number, since it is smaller than the sum of its proper divisors (25909127250).

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

20151543342 is a wasteful number, since it uses less digits than its factorization.

20151543342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479798663.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 20151543342 in words is "twenty billion, one hundred fifty-one million, five hundred forty-three thousand, three hundred forty-two".