20201853537 has 12 divisors (see below), whose sum is σ = 29801316480. Its totient is φ = 13181350968.

The previous prime is 20201853509. The next prime is 20201853541. The reversal of 20201853537 is 73535810202.

It is a happy number.

20201853537 is a `hidden beast` number, since 20 + 20 + 1 + 85 + 3 + 537 = 666.

It is not a de Polignac number, because 20201853537 - 2⁷ = 20201853409 is a prime.

It is a super-2 number, since 2×20201853537² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20201853577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23878837 + ... + 23879682.

It is an arithmetic number, because the mean of its divisors is an integer number (2483443040).

Almost surely, 2^20201853537 is an apocalyptic number.

It is an amenable number.

20201853537 is a deficient number, since it is larger than the sum of its proper divisors (9599462943).

20201853537 is a wasteful number, since it uses less digits than its factorization.

20201853537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47758572 (or 47758569 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 20201853537 in words is "twenty billion, two hundred one million, eight hundred fifty-three thousand, five hundred thirty-seven".