1741721427621 has 16 divisors (see below), whose sum is σ = 2948946332800. Its totient is φ = 995269387104.

The previous prime is 1741721427587. The next prime is 1741721427631. The reversal of 1741721427621 is 1267241271471.

1741721427621 is a `hidden beast` number, since 1 + 7 + 4 + 1 + 7 + 2 + 14 + 2 + 7 + 621 = 666.

It is not a de Polignac number, because 1741721427621 - 2²³ = 1741713039013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1741721427631) 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, 4607728456 + ... + 4607728833.

It is an arithmetic number, because the mean of its divisors is an integer number (184309145800).

Almost surely, 2^{1741721427621} is an apocalyptic number.

It is an amenable number.

1741721427621 is a deficient number, since it is larger than the sum of its proper divisors (1207224905179).

1741721427621 is an equidigital number, since it uses as much as digits as its factorization.

1741721427621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9215457305 (or 9215457299 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The spelling of 1741721427621 in words is "one trillion, seven hundred forty-one billion, seven hundred twenty-one million, four hundred twenty-seven thousand, six hundred twenty-one".