28552437465 has 16 divisors (see below), whose sum is σ = 48371188608. Its totient is φ = 14332203776.

The previous prime is 28552437449. The next prime is 28552437469. The reversal of 28552437465 is 56473425582.

It is a cyclic number.

It is not a de Polignac number, because 28552437465 - 2⁴ = 28552437449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (28552437469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55984917 + ... + 55985426.

It is an arithmetic number, because the mean of its divisors is an integer number (3023199288).

Almost surely, 2^28552437465 is an apocalyptic number.

It is an amenable number.

28552437465 is a deficient number, since it is larger than the sum of its proper divisors (19818751143).

28552437465 is a wasteful number, since it uses less digits than its factorization.

28552437465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111970368.

The product of its digits is 8064000, while the sum is 51.

The spelling of 28552437465 in words is "twenty-eight billion, five hundred fifty-two million, four hundred thirty-seven thousand, four hundred sixty-five".