201151601064 has 24 divisors (see below), whose sum is σ = 544785586410. Its totient is φ = 67050533664.

The previous prime is 201151601047. The next prime is 201151601069. The reversal of 201151601064 is 460106151102.

201151601064 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 51 + 601 + 0 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 135528532164 + 65623068900 = 368142^2 + 256170^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×201151601064² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201151601069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1396886047 + ... + 1396886190.

Almost surely, 2^201151601064 is an apocalyptic number.

201151601064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201151601064 is an abundant number, since it is smaller than the sum of its proper divisors (343633985346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201151601064 is a wasteful number, since it uses less digits than its factorization.

201151601064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793772249 (or 2793772242 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 201151601064 its reverse (460106151102), we get a palindrome (661257752166).

The spelling of 201151601064 in words is "two hundred one billion, one hundred fifty-one million, six hundred one thousand, sixty-four".