16564573540454 has 8 divisors (see below), whose sum is σ = 24847106405880. Its totient is φ = 8282204738496.

The previous prime is 16564573540451. The next prime is 16564573540457. The reversal of 16564573540454 is 45404537546561.

It is an interprime number because it is at equal distance from previous prime (16564573540451) and next prime (16564573540457).

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

It is a super-2 number, since 2×16564573540454² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16564573540393 and 16564573540402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16564573540451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40763144 + ... + 41167499.

It is an arithmetic number, because the mean of its divisors is an integer number (3105888300735).

Almost surely, 2^{16564573540454} is an apocalyptic number.

16564573540454 is a deficient number, since it is larger than the sum of its proper divisors (8282532865426).

16564573540454 is a wasteful number, since it uses less digits than its factorization.

16564573540454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82031734.

The product of its (nonzero) digits is 120960000, while the sum is 59.

The spelling of 16564573540454 in words is "sixteen trillion, five hundred sixty-four billion, five hundred seventy-three million, five hundred forty thousand, four hundred fifty-four".