201020950642 has 32 divisors (see below), whose sum is σ = 312967713024. Its totient is φ = 96757416000.

The previous prime is 201020950621. The next prime is 201020950643. The reversal of 201020950642 is 246059020102.

It is not an unprimeable number, because it can be changed into a prime (201020950643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11523667 + ... + 11541097.

It is an arithmetic number, because the mean of its divisors is an integer number (9780241032).

Almost surely, 2^201020950642 is an apocalyptic number.

201020950642 is a deficient number, since it is larger than the sum of its proper divisors (111946762382).

201020950642 is a wasteful number, since it uses less digits than its factorization.

201020950642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19114.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 201020950642 its reverse (246059020102), we get a palindrome (447079970744).

The spelling of 201020950642 in words is "two hundred one billion, twenty million, nine hundred fifty thousand, six hundred forty-two".