20353366853537 has 16 divisors (see below), whose sum is σ = 20678200251072. Its totient is φ = 20029806800640.

The previous prime is 20353366853531. The next prime is 20353366853551. The reversal of 20353366853537 is 73535866335302.

It is a cyclic number.

It is not a de Polignac number, because 20353366853537 - 2¹⁰ = 20353366852513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20353366853531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100564958 + ... + 100767144.

It is an arithmetic number, because the mean of its divisors is an integer number (1292387515692).

Almost surely, 2^{20353366853537} is an apocalyptic number.

It is an amenable number.

20353366853537 is a deficient number, since it is larger than the sum of its proper divisors (324833397535).

20353366853537 is a wasteful number, since it uses less digits than its factorization.

20353366853537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205328.

The product of its (nonzero) digits is 122472000, while the sum is 59.

The spelling of 20353366853537 in words is "twenty trillion, three hundred fifty-three billion, three hundred sixty-six million, eight hundred fifty-three thousand, five hundred thirty-seven".