201040400051 has 2 divisors, whose sum is σ = 201040400052. Its totient is φ = 201040400050.

The previous prime is 201040400047. The next prime is 201040400117. The reversal of 201040400051 is 150004040102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201040400051 - 2² = 201040400047 is a prime.

It is a super-2 number, since 2×201040400051² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201040490051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100520200025 + 100520200026.

It is an arithmetic number, because the mean of its divisors is an integer number (100520200026).

Almost surely, 2^201040400051 is an apocalyptic number.

201040400051 is a deficient number, since it is larger than the sum of its proper divisors (1).

201040400051 is an equidigital number, since it uses as much as digits as its factorization.

201040400051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 201040400051 its reverse (150004040102), we get a palindrome (351044440153).

The spelling of 201040400051 in words is "two hundred one billion, forty million, four hundred thousand, fifty-one".