20052561658 has 8 divisors (see below), whose sum is σ = 31661939520. Its totient is φ = 9498581820.

The previous prime is 20052561611. The next prime is 20052561671. The reversal of 20052561658 is 85616525002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20052561658.

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, 263849458 + ... + 263849533.

It is an arithmetic number, because the mean of its divisors is an integer number (3957742440).

Almost surely, 2^20052561658 is an apocalyptic number.

20052561658 is a deficient number, since it is larger than the sum of its proper divisors (11609377862).

20052561658 is a wasteful number, since it uses less digits than its factorization.

20052561658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527699012.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 20052561658 in words is "twenty billion, fifty-two million, five hundred sixty-one thousand, six hundred fifty-eight".