1712056720621 has 16 divisors (see below), whose sum is σ = 1879823836800. Its totient is φ = 1549580251968.

The previous prime is 1712056720579. The next prime is 1712056720667. The reversal of 1712056720621 is 1260276502171.

It is a cyclic number.

It is not a de Polignac number, because 1712056720621 - 2¹⁷ = 1712056589549 is a prime.

It is a super-2 number, since 2×1712056720621² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1712056720321) 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, 2570721 + ... + 3167446.

It is an arithmetic number, because the mean of its divisors is an integer number (117488989800).

Almost surely, 2^{1712056720621} is an apocalyptic number.

It is an amenable number.

1712056720621 is a deficient number, since it is larger than the sum of its proper divisors (167767116179).

1712056720621 is a wasteful number, since it uses less digits than its factorization.

1712056720621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738628.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 1712056720621 in words is "one trillion, seven hundred twelve billion, fifty-six million, seven hundred twenty thousand, six hundred twenty-one".