28455575554 has 16 divisors (see below), whose sum is σ = 49153363776. Its totient is φ = 12102152400.

The previous prime is 28455575513. The next prime is 28455575557. The reversal of 28455575554 is 45557555482.

It is a junction number, because it is equal to n+sod(n) for n = 28455575495 and 28455575504.

It is not an unprimeable number, because it can be changed into a prime (28455575557) 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, 7755957 + ... + 7759624.

It is an arithmetic number, because the mean of its divisors is an integer number (3072085236).

Almost surely, 2^28455575554 is an apocalyptic number.

28455575554 is a deficient number, since it is larger than the sum of its proper divisors (20697788222).

28455575554 is a wasteful number, since it uses less digits than its factorization.

28455575554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15515721.

The product of its digits is 28000000, while the sum is 55.

The spelling of 28455575554 in words is "twenty-eight billion, four hundred fifty-five million, five hundred seventy-five thousand, five hundred fifty-four".