64551015546 has 32 divisors (see below), whose sum is σ = 129589649280. Its totient is φ = 21435870144.

The previous prime is 64551015541. The next prime is 64551015553.

64551015546 is nontrivially palindromic in base 10.

64551015546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64551015498 and 64551015507.

It is not an unprimeable number, because it can be changed into a prime (64551015541) 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, 1974691 + ... + 2007113.

It is an arithmetic number, because the mean of its divisors is an integer number (4049676540).

Almost surely, 2^64551015546 is an apocalyptic number.

64551015546 is an abundant number, since it is smaller than the sum of its proper divisors (65038633734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64551015546 is a wasteful number, since it uses less digits than its factorization.

64551015546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33670.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 64551015546 in words is "sixty-four billion, five hundred fifty-one million, fifteen thousand, five hundred forty-six".