16401772740653 has 16 divisors (see below), whose sum is σ = 17076789308160. Its totient is φ = 15740695903296.

The previous prime is 16401772740623. The next prime is 16401772740677. The reversal of 16401772740653 is 35604727710461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16401772740653 - 2²² = 16401768546349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16401772740595 and 16401772740604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401772740623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2330726 + ... + 6183512.

It is an arithmetic number, because the mean of its divisors is an integer number (1067299331760).

Almost surely, 2^{16401772740653} is an apocalyptic number.

It is an amenable number.

16401772740653 is a deficient number, since it is larger than the sum of its proper divisors (675016567507).

16401772740653 is a wasteful number, since it uses less digits than its factorization.

16401772740653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854596.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 16401772740653 in words is "sixteen trillion, four hundred one billion, seven hundred seventy-two million, seven hundred forty thousand, six hundred fifty-three".