201253542651 has 16 divisors (see below), whose sum is σ = 340746739200. Its totient is φ = 115002024264.

The previous prime is 201253542601. The next prime is 201253542671. The reversal of 201253542651 is 156245352102.

201253542651 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 53 + 542 + 65 + 1 = 666.

It is not a de Polignac number, because 201253542651 - 2¹⁴ = 201253526267 is a prime.

It is a super-2 number, since 2×201253542651² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201253542601) 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, 532416591 + ... + 532416968.

It is an arithmetic number, because the mean of its divisors is an integer number (21296671200).

Almost surely, 2^201253542651 is an apocalyptic number.

201253542651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201253542651 is a deficient number, since it is larger than the sum of its proper divisors (139493196549).

201253542651 is a wasteful number, since it uses less digits than its factorization.

201253542651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064833575 (or 1064833569 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 201253542651 its reverse (156245352102), we get a palindrome (357498894753).

The spelling of 201253542651 in words is "two hundred one billion, two hundred fifty-three million, five hundred forty-two thousand, six hundred fifty-one".