201015424551 has 4 divisors (see below), whose sum is σ = 268020566072. Its totient is φ = 134010283032.

The previous prime is 201015424537. The next prime is 201015424607. The reversal of 201015424551 is 155424510102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201015424551 - 2¹³ = 201015416359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201015424501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33502570756 + ... + 33502570761.

It is an arithmetic number, because the mean of its divisors is an integer number (67005141518).

Almost surely, 2^201015424551 is an apocalyptic number.

201015424551 is a deficient number, since it is larger than the sum of its proper divisors (67005141521).

201015424551 is an equidigital number, since it uses as much as digits as its factorization.

201015424551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67005141520.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 201015424551 its reverse (155424510102), we get a palindrome (356439934653).

The spelling of 201015424551 in words is "two hundred one billion, fifteen million, four hundred twenty-four thousand, five hundred fifty-one".