201864555957 has 8 divisors (see below), whose sum is σ = 269428234176. Its totient is φ = 134438624192.

The previous prime is 201864555943. The next prime is 201864556013. The reversal of 201864555957 is 759555468102.

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 201864555957 - 2⁴ = 201864555941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201864555897 and 201864555906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201864555917) 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, 34433193 + ... + 34439054.

It is an arithmetic number, because the mean of its divisors is an integer number (33678529272).

Almost surely, 2^201864555957 is an apocalyptic number.

It is an amenable number.

201864555957 is a deficient number, since it is larger than the sum of its proper divisors (67563678219).

201864555957 is an equidigital number, since it uses as much as digits as its factorization.

201864555957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68873227.

The product of its (nonzero) digits is 15120000, while the sum is 57.

The spelling of 201864555957 in words is "two hundred one billion, eight hundred sixty-four million, five hundred fifty-five thousand, nine hundred fifty-seven".