72289734461570 has 64 divisors (see below), whose sum is σ = 132774311884896. Its totient is φ = 28332050503680.

The previous prime is 72289734461449. The next prime is 72289734461579. The reversal of 72289734461570 is 7516443798227.

It is a Cunningham number, because it is equal to 8502337²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 43159394515561 + 29130339946009 = 6569581^2 + 5397253^2 .

It is a super-3 number, since 3×72289734461570³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72289734461497 and 72289734461506.

It is not an unprimeable number, because it can be changed into a prime (72289734461579) 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, 94678172 + ... + 95438648.

It is a 2-persistent number, because it is pandigital, and so is 2⋅72289734461570 = 144579468923140, but 3⋅72289734461570 = 216869203384710 is not.

Almost surely, 2^{72289734461570} is an apocalyptic number.

72289734461570 is a deficient number, since it is larger than the sum of its proper divisors (60484577423326).

72289734461570 is a wasteful number, since it uses less digits than its factorization.

72289734461570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761415.

The product of its (nonzero) digits is 142248960, while the sum is 65.

The spelling of 72289734461570 in words is "seventy-two trillion, two hundred eighty-nine billion, seven hundred thirty-four million, four hundred sixty-one thousand, five hundred seventy".