20154233542 has 16 divisors (see below), whose sum is σ = 30349276272. Its totient is φ = 10037882880.

The previous prime is 20154233507. The next prime is 20154233557. The reversal of 20154233542 is 24533245102.

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, 536953 + ... + 573259.

It is an arithmetic number, because the mean of its divisors is an integer number (1896829767).

Almost surely, 2^20154233542 is an apocalyptic number.

20154233542 is a deficient number, since it is larger than the sum of its proper divisors (10195042730).

20154233542 is a wasteful number, since it uses less digits than its factorization.

20154233542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37383.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20154233542 its reverse (24533245102), we get a palindrome (44687478644).

The spelling of 20154233542 in words is "twenty billion, one hundred fifty-four million, two hundred thirty-three thousand, five hundred forty-two".