1623562704481 has 15 divisors (see below), whose sum is σ = 1657424865201. Its totient is φ = 1590389141796.

The previous prime is 1623562704397. The next prime is 1623562704503. The reversal of 1623562704481 is 1844072653261.

The square root of 1623562704481 is 1274191.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1623562704481 - 2¹⁵ = 1623562671713 is a prime.

It is a super-2 number, since 2×1623562704481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623562404481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12783958240 + ... + 12783958366.

Almost surely, 2^{1623562704481} is an apocalyptic number.

1623562704481 is the 1274191-st square number.

1623562704481 is the 637096-th centered octagonal number.

It is an amenable number.

1623562704481 is a deficient number, since it is larger than the sum of its proper divisors (33862160720).

1623562704481 is an frugal number, since it uses more digits than its factorization.

1623562704481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

Multiplying 1623562704481 by its sum of digits (49), we get a square (79554572519569 = 8919337²).

The spelling of 1623562704481 in words is "one trillion, six hundred twenty-three billion, five hundred sixty-two million, seven hundred four thousand, four hundred eighty-one".