64473583202645 has 32 divisors (see below), whose sum is σ = 78735500029440. Its totient is φ = 50668655454720.

The previous prime is 64473583202641. The next prime is 64473583202659. The reversal of 64473583202645 is 54620238537446.

It is not a de Polignac number, because 64473583202645 - 2² = 64473583202641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64473583202641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2655297905 + ... + 2655322185.

It is an arithmetic number, because the mean of its divisors is an integer number (2460484375920).

Almost surely, 2^{64473583202645} is an apocalyptic number.

It is an amenable number.

64473583202645 is a deficient number, since it is larger than the sum of its proper divisors (14261916826795).

64473583202645 is a wasteful number, since it uses less digits than its factorization.

64473583202645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30365.

The product of its (nonzero) digits is 116121600, while the sum is 59.

The spelling of 64473583202645 in words is "sixty-four trillion, four hundred seventy-three billion, five hundred eighty-three million, two hundred two thousand, six hundred forty-five".