1720700770172 has 48 divisors (see below), whose sum is σ = 3186050801472. Its totient is φ = 811519779840.

The previous prime is 1720700770121. The next prime is 1720700770207. The reversal of 1720700770172 is 2710770070271.

It is a super-2 number, since 2×1720700770172² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1627922 + ... + 2468102.

It is an arithmetic number, because the mean of its divisors is an integer number (66376058364).

Almost surely, 2^{1720700770172} is an apocalyptic number.

It is an amenable number.

1720700770172 is a deficient number, since it is larger than the sum of its proper divisors (1465350031300).

1720700770172 is a wasteful number, since it uses less digits than its factorization.

1720700770172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840518 (or 840516 counting only the distinct ones).

The product of its (nonzero) digits is 67228, while the sum is 41.

The spelling of 1720700770172 in words is "one trillion, seven hundred twenty billion, seven hundred million, seven hundred seventy thousand, one hundred seventy-two".