201864555955 has 8 divisors (see below), whose sum is σ = 248145698304. Its totient is φ = 157552824000.

The previous prime is 201864555943. The next prime is 201864556013. The reversal of 201864555955 is 559555468102.

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

It is not a de Polignac number, because 201864555955 - 2¹³ = 201864547763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201864555896 and 201864555905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492352371 + ... + 492352780.

It is an arithmetic number, because the mean of its divisors is an integer number (31018212288).

Almost surely, 2^201864555955 is an apocalyptic number.

201864555955 is a deficient number, since it is larger than the sum of its proper divisors (46281142349).

201864555955 is an equidigital number, since it uses as much as digits as its factorization.

201864555955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984705197.

The product of its (nonzero) digits is 10800000, while the sum is 55.

The spelling of 201864555955 in words is "two hundred one billion, eight hundred sixty-four million, five hundred fifty-five thousand, nine hundred fifty-five".