534445656145921 has 32 divisors (see below), whose sum is σ = 593678701145376. Its totient is φ = 477917978112000.

The previous prime is 534445656145901. The next prime is 534445656145931. The reversal of 534445656145921 is 129541656544435.

It can be written as a sum of positive squares in 16 ways, for example, as 30902647770225 + 503543008375696 = 5559015^2 + 22439764^2 .

It is a cyclic number.

It is not a de Polignac number, because 534445656145921 - 2⁹ = 534445656145409 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (534445656145901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609422211 + ... + 610298551.

It is an arithmetic number, because the mean of its divisors is an integer number (18552459410793).

Almost surely, 2^{534445656145921} is an apocalyptic number.

It is an amenable number.

534445656145921 is a deficient number, since it is larger than the sum of its proper divisors (59233044999455).

534445656145921 is a wasteful number, since it uses less digits than its factorization.

534445656145921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881893.

The product of its digits is 311040000, while the sum is 64.

The spelling of 534445656145921 in words is "five hundred thirty-four trillion, four hundred forty-five billion, six hundred fifty-six million, one hundred forty-five thousand, nine hundred twenty-one".