1720661260054 has 32 divisors (see below), whose sum is σ = 2846123078400. Its totient is φ = 773688399840.

The previous prime is 1720661260051. The next prime is 1720661260057. The reversal of 1720661260054 is 4500621660271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1720661260051) and next prime (1720661260057).

It is a junction number, because it is equal to n+sod(n) for n = 1720661259989 and 1720661260016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720661260051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168594 + ... + 1862725.

It is an arithmetic number, because the mean of its divisors is an integer number (88941346200).

Almost surely, 2^{1720661260054} is an apocalyptic number.

1720661260054 is a deficient number, since it is larger than the sum of its proper divisors (1125461818346).

1720661260054 is a wasteful number, since it uses less digits than its factorization.

1720661260054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031748.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 1720661260054 in words is "one trillion, seven hundred twenty billion, six hundred sixty-one million, two hundred sixty thousand, fifty-four".