564216155054021 has 12 divisors (see below), whose sum is σ = 599359607751300. Its totient is φ = 531025231080960.

The previous prime is 564216155053907. The next prime is 564216155054023. The reversal of 564216155054021 is 120450551612465.

It can be written as a sum of positive squares in 6 ways, for example, as 33145927562500 + 531070227491521 = 5757250^2 + 23044961^2 .

It is not a de Polignac number, because 564216155054021 - 2¹⁴ = 564216155037637 is a prime.

It is a super-3 number, since 3×564216155054021³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564216155054023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89925305 + ... + 95994753.

It is an arithmetic number, because the mean of its divisors is an integer number (49946633979275).

Almost surely, 2^{564216155054021} is an apocalyptic number.

It is an amenable number.

564216155054021 is a deficient number, since it is larger than the sum of its proper divisors (35143452697279).

564216155054021 is a wasteful number, since it uses less digits than its factorization.

564216155054021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391144 (or 6391127 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 564216155054021 in words is "five hundred sixty-four trillion, two hundred sixteen billion, one hundred fifty-five million, fifty-four thousand, twenty-one".