1620786323041 has 16 divisors (see below), whose sum is σ = 1730680934400. Its totient is φ = 1514181105360.

The previous prime is 1620786323029. The next prime is 1620786323077. The reversal of 1620786323041 is 1403236870261.

It is a cyclic number.

It is not a de Polignac number, because 1620786323041 - 2²¹ = 1620784225889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620786323641) 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, 25614160 + ... + 25677358.

It is an arithmetic number, because the mean of its divisors is an integer number (108167558400).

Almost surely, 2^{1620786323041} is an apocalyptic number.

It is an amenable number.

1620786323041 is a deficient number, since it is larger than the sum of its proper divisors (109894611359).

1620786323041 is a wasteful number, since it uses less digits than its factorization.

1620786323041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89196.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 1620786323041 in words is "one trillion, six hundred twenty billion, seven hundred eighty-six million, three hundred twenty-three thousand, forty-one".