1621047705327 has 16 divisors (see below), whose sum is σ = 2401586016000. Its totient is φ = 1080683233272.

The previous prime is 1621047705293. The next prime is 1621047705371. The reversal of 1621047705327 is 7235077401261.

1621047705327 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 0 + 47 + 70 + 532 + 7 = 666.

It is not a de Polignac number, because 1621047705327 - 2²³ = 1621039316719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621047705427) 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, 1725574 + ... + 2493932.

It is an arithmetic number, because the mean of its divisors is an integer number (150099126000).

Almost surely, 2^{1621047705327} is an apocalyptic number.

1621047705327 is a deficient number, since it is larger than the sum of its proper divisors (780538310673).

1621047705327 is an equidigital number, since it uses as much as digits as its factorization.

1621047705327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846507 (or 846501 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 1621047705327 in words is "one trillion, six hundred twenty-one billion, forty-seven million, seven hundred five thousand, three hundred twenty-seven".