1720651260151 has 2 divisors, whose sum is σ = 1720651260152. Its totient is φ = 1720651260150.

The previous prime is 1720651260109. The next prime is 1720651260247. The reversal of 1720651260151 is 1510621560271.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720651260151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1720651260151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1720651260101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860325630075 + 860325630076.

It is an arithmetic number, because the mean of its divisors is an integer number (860325630076).

Almost surely, 2^{1720651260151} is an apocalyptic number.

1720651260151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720651260151 is an equidigital number, since it uses as much as digits as its factorization.

1720651260151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 1720651260151 in words is "one trillion, seven hundred twenty billion, six hundred fifty-one million, two hundred sixty thousand, one hundred fifty-one".