201870016870 has 16 divisors (see below), whose sum is σ = 382490558640. Its totient is φ = 76498111584.

The previous prime is 201870016861. The next prime is 201870016871. The reversal of 201870016870 is 78610078102.

It is a super-2 number, since 2×201870016870² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201870016871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531236697 + ... + 531237076.

It is an arithmetic number, because the mean of its divisors is an integer number (23905659915).

Almost surely, 2^201870016870 is an apocalyptic number.

201870016870 is a deficient number, since it is larger than the sum of its proper divisors (180620541770).

201870016870 is a wasteful number, since it uses less digits than its factorization.

201870016870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062473799.

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 201870016870 in words is "two hundred one billion, eight hundred seventy million, sixteen thousand, eight hundred seventy".