64473170992044 has 48 divisors (see below), whose sum is σ = 153633922011360. Its totient is φ = 21039192486400.

The previous prime is 64473170992039. The next prime is 64473170992049. The reversal of 64473170992044 is 44029907137446.

It is an interprime number because it is at equal distance from previous prime (64473170992039) and next prime (64473170992049).

It is a super-2 number, since 2×64473170992044² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64473170992049) 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, 298744299 + ... + 298960034.

It is an arithmetic number, because the mean of its divisors is an integer number (3200706708570).

Almost surely, 2^{64473170992044} is an apocalyptic number.

It is an amenable number.

64473170992044 is an abundant number, since it is smaller than the sum of its proper divisors (89160751019316).

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

64473170992044 is a wasteful number, since it uses less digits than its factorization.

64473170992044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597704530 (or 597704528 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 64473170992044 in words is "sixty-four trillion, four hundred seventy-three billion, one hundred seventy million, nine hundred ninety-two thousand, forty-four".