201072154939 has 2 divisors, whose sum is σ = 201072154940. Its totient is φ = 201072154938.

The previous prime is 201072154937. The next prime is 201072155003. The reversal of 201072154939 is 939451270102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201072154939 - 2¹ = 201072154937 is a prime.

It is a super-2 number, since 2×201072154939² (a number of 23 digits) contains 22 as substring.

Together with 201072154937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 201072154895 and 201072154904.

It is not a weakly prime, because it can be changed into another prime (201072154937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100536077469 + 100536077470.

It is an arithmetic number, because the mean of its divisors is an integer number (100536077470).

Almost surely, 2^201072154939 is an apocalyptic number.

201072154939 is a deficient number, since it is larger than the sum of its proper divisors (1).

201072154939 is an equidigital number, since it uses as much as digits as its factorization.

201072154939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 201072154939 in words is "two hundred one billion, seventy-two million, one hundred fifty-four thousand, nine hundred thirty-nine".