20201687035157 has 8 divisors (see below), whose sum is σ = 20204901756984. Its totient is φ = 20198472573888.

The previous prime is 20201687035141. The next prime is 20201687035169. The reversal of 20201687035157 is 75153078610202.

It can be written as a sum of positive squares in 4 ways, for example, as 56724472561 + 20144962562596 = 238169^2 + 4488314^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20201687035157 - 2⁴ = 20201687035141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201687035457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201537383 + ... + 201637595.

It is an arithmetic number, because the mean of its divisors is an integer number (2525612719623).

Almost surely, 2^{20201687035157} is an apocalyptic number.

It is an amenable number.

20201687035157 is a deficient number, since it is larger than the sum of its proper divisors (3214721827).

20201687035157 is a wasteful number, since it uses less digits than its factorization.

20201687035157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130279.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 20201687035157 in words is "twenty trillion, two hundred one billion, six hundred eighty-seven million, thirty-five thousand, one hundred fifty-seven".