1720661260106 has 16 divisors (see below), whose sum is σ = 2642599469664. Its totient is φ = 839818778064.

The previous prime is 1720661260103. The next prime is 1720661260117. The reversal of 1720661260106 is 6010621660271.

It is a super-3 number, since 3×1720661260106³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1720661260106.

It is not an unprimeable number, because it can be changed into a prime (1720661260103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5857745 + ... + 6144468.

It is an arithmetic number, because the mean of its divisors is an integer number (165162466854).

Almost surely, 2^{1720661260106} is an apocalyptic number.

1720661260106 is a deficient number, since it is larger than the sum of its proper divisors (921938209558).

1720661260106 is a wasteful number, since it uses less digits than its factorization.

1720661260106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12003925.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 1720661260106 in words is "one trillion, seven hundred twenty billion, six hundred sixty-one million, two hundred sixty thousand, one hundred six".