64561950453 has 128 divisors (see below), whose sum is σ = 119965483008. Its totient is φ = 29795040000.

The previous prime is 64561950451. The next prime is 64561950457. The reversal of 64561950453 is 35405916546.

64561950453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64561950453 - 2¹ = 64561950451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64561950451) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17778948 + ... + 17782578.

It is an arithmetic number, because the mean of its divisors is an integer number (937230336).

Almost surely, 2^64561950453 is an apocalyptic number.

It is an amenable number.

64561950453 is a deficient number, since it is larger than the sum of its proper divisors (55403532555).

64561950453 is a wasteful number, since it uses less digits than its factorization.

64561950453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 64561950453 in words is "sixty-four billion, five hundred sixty-one million, nine hundred fifty thousand, four hundred fifty-three".