73145432002 has 12 divisors (see below), whose sum is σ = 114695910630. Its totient is φ = 34982597408.

The previous prime is 73145431999. The next prime is 73145432027. The reversal of 73145432002 is 20023454137.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38463446641 + 34681985361 = 196121^2 + 186231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34566727 + ... + 34568842.

Almost surely, 2^73145432002 is an apocalyptic number.

73145432002 is a deficient number, since it is larger than the sum of its proper divisors (41550478628).

73145432002 is a wasteful number, since it uses less digits than its factorization.

73145432002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69135617 (or 69135594 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 73145432002 its reverse (20023454137), we get a palindrome (93168886139).

The spelling of 73145432002 in words is "seventy-three billion, one hundred forty-five million, four hundred thirty-two thousand, two".