201501111659 has 2 divisors, whose sum is σ = 201501111660. Its totient is φ = 201501111658.

The previous prime is 201501111601. The next prime is 201501111697. The reversal of 201501111659 is 956111105102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201501111659 is a prime.

It is not a weakly prime, because it can be changed into another prime (201501141659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100750555829 + 100750555830.

It is an arithmetic number, because the mean of its divisors is an integer number (100750555830).

Almost surely, 2^201501111659 is an apocalyptic number.

201501111659 is a deficient number, since it is larger than the sum of its proper divisors (1).

201501111659 is an equidigital number, since it uses as much as digits as its factorization.

201501111659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 32.

The spelling of 201501111659 in words is "two hundred one billion, five hundred one million, one hundred eleven thousand, six hundred fifty-nine".