1623649509601 has 8 divisors (see below), whose sum is σ = 1855952190144. Its totient is φ = 1391435016720.

The previous prime is 1623649509583. The next prime is 1623649509641. The reversal of 1623649509601 is 1069059463261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1623649509601 - 2⁵ = 1623649509569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623649509641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22007455 + ... + 22081108.

It is an arithmetic number, because the mean of its divisors is an integer number (231994023768).

Almost surely, 2^{1623649509601} is an apocalyptic number.

It is an amenable number.

1623649509601 is a deficient number, since it is larger than the sum of its proper divisors (232302680543).

1623649509601 is an equidigital number, since it uses as much as digits as its factorization.

1623649509601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44093831.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 1623649509601 in words is "one trillion, six hundred twenty-three billion, six hundred forty-nine million, five hundred nine thousand, six hundred one".