64454089471 has 4 divisors (see below), whose sum is σ = 64475026000. Its totient is φ = 64433152944.

The previous prime is 64454089463. The next prime is 64454089489. The reversal of 64454089471 is 17498045446.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64454089471 - 2³ = 64454089463 is a prime.

It is a super-3 number, since 3×64454089471³ (a number of 33 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 (64454089411) 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, 10463646 + ... + 10469803.

It is an arithmetic number, because the mean of its divisors is an integer number (16118756500).

Almost surely, 2^64454089471 is an apocalyptic number.

64454089471 is a deficient number, since it is larger than the sum of its proper divisors (20936529).

64454089471 is a wasteful number, since it uses less digits than its factorization.

64454089471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20936528.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 64454089471 in words is "sixty-four billion, four hundred fifty-four million, eighty-nine thousand, four hundred seventy-one".