20012054642 has 8 divisors (see below), whose sum is σ = 30124153776. Its totient is φ = 9970670052.

The previous prime is 20012054639. The next prime is 20012054651. The reversal of 20012054642 is 24645021002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17677928 + ... + 17679059.

It is an arithmetic number, because the mean of its divisors is an integer number (3765519222).

Almost surely, 2^20012054642 is an apocalyptic number.

20012054642 is a deficient number, since it is larger than the sum of its proper divisors (10112099134).

20012054642 is a wasteful number, since it uses less digits than its factorization.

20012054642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35357272.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20012054642 its reverse (24645021002), we get a palindrome (44657075644).

The spelling of 20012054642 in words is "twenty billion, twelve million, fifty-four thousand, six hundred forty-two".