201601499951 has 2 divisors, whose sum is σ = 201601499952. Its totient is φ = 201601499950.

The previous prime is 201601499933. The next prime is 201601499987. The reversal of 201601499951 is 159994106102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201601499951 - 2⁶ = 201601499887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201601499896 and 201601499905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201601499851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100800749975 + 100800749976.

It is an arithmetic number, because the mean of its divisors is an integer number (100800749976).

Almost surely, 2^201601499951 is an apocalyptic number.

201601499951 is a deficient number, since it is larger than the sum of its proper divisors (1).

201601499951 is an equidigital number, since it uses as much as digits as its factorization.

201601499951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 201601499951 in words is "two hundred one billion, six hundred one million, four hundred ninety-nine thousand, nine hundred fifty-one".