64254555545245 has 8 divisors (see below), whose sum is σ = 83036656397016. Its totient is φ = 47449517941056.

The previous prime is 64254555545237. The next prime is 64254555545251. The reversal of 64254555545245 is 54254555545246.

It can be written as a sum of positive squares in 4 ways, for example, as 5818333284 + 64248737211961 = 76278^2 + 8015531^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64254555545245 - 2³ = 64254555545237 is a prime.

It is a super-2 number, since 2×64254555545245² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494265811822 + ... + 494265811951.

It is an arithmetic number, because the mean of its divisors is an integer number (10379582049627).

Almost surely, 2^{64254555545245} is an apocalyptic number.

64254555545245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64254555545245 is a deficient number, since it is larger than the sum of its proper divisors (18782100851771).

64254555545245 is a wasteful number, since it uses less digits than its factorization.

64254555545245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988531623791.

The product of its digits is 480000000, while the sum is 61.

Subtracting from 64254555545245 its reverse (54254555545246), we obtain a palindrome (9999999999999).

The spelling of 64254555545245 in words is "sixty-four trillion, two hundred fifty-four billion, five hundred fifty-five million, five hundred forty-five thousand, two hundred forty-five".