64516125451 has 8 divisors (see below), whose sum is σ = 68364128304. Its totient is φ = 60674004480.

The previous prime is 64516125439. The next prime is 64516125481. The reversal of 64516125451 is 15452161546.

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 64516125451 - 2³⁵ = 30156387083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64516125481) 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, 1447870 + ... + 1491763.

It is an arithmetic number, because the mean of its divisors is an integer number (8545516038).

Almost surely, 2^64516125451 is an apocalyptic number.

64516125451 is a deficient number, since it is larger than the sum of its proper divisors (3848002853).

64516125451 is a wasteful number, since it uses less digits than its factorization.

64516125451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940941.

The product of its digits is 144000, while the sum is 40.

Adding to 64516125451 its reverse (15452161546), we get a palindrome (79968286997).

The spelling of 64516125451 in words is "sixty-four billion, five hundred sixteen million, one hundred twenty-five thousand, four hundred fifty-one".