80445361553 has 8 divisors (see below), whose sum is σ = 83052458496. Its totient is φ = 77839020000.

The previous prime is 80445361541. The next prime is 80445361571. The reversal of 80445361553 is 35516354408.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80445361553 - 2⁴ = 80445361537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80445361153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31700 + ... + 402362.

It is an arithmetic number, because the mean of its divisors is an integer number (10381557312).

Almost surely, 2^80445361553 is an apocalyptic number.

It is an amenable number.

80445361553 is a deficient number, since it is larger than the sum of its proper divisors (2607096943).

80445361553 is a wasteful number, since it uses less digits than its factorization.

80445361553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377695.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 80445361553 in words is "eighty billion, four hundred forty-five million, three hundred sixty-one thousand, five hundred fifty-three".