20454524546 has 4 divisors (see below), whose sum is σ = 30681786822. Its totient is φ = 10227262272.

The previous prime is 20454524543. The next prime is 20454524609. The reversal of 20454524546 is 64542545402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20453290225 + 1234321 = 143015^2 + 1111^2 .

It is a super-2 number, since 2×20454524546² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20454524543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5113631135 + ... + 5113631138.

Almost surely, 2^20454524546 is an apocalyptic number.

20454524546 is a deficient number, since it is larger than the sum of its proper divisors (10227262276).

20454524546 is a wasteful number, since it uses less digits than its factorization.

20454524546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227262275.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 20454524546 in words is "twenty billion, four hundred fifty-four million, five hundred twenty-four thousand, five hundred forty-six".