72450361123 has 16 divisors (see below), whose sum is σ = 86418994176. Its totient is φ = 59387533920.

The previous prime is 72450361121. The next prime is 72450361147. The reversal of 72450361123 is 32116305427.

It is a cyclic number.

It is not a de Polignac number, because 72450361123 - 2¹ = 72450361121 is a prime.

It is a super-2 number, since 2×72450361123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72450361121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743493 + ... + 835273.

It is an arithmetic number, because the mean of its divisors is an integer number (5401187136).

Almost surely, 2^72450361123 is an apocalyptic number.

72450361123 is a deficient number, since it is larger than the sum of its proper divisors (13968633053).

72450361123 is a wasteful number, since it uses less digits than its factorization.

72450361123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96714.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 72450361123 in words is "seventy-two billion, four hundred fifty million, three hundred sixty-one thousand, one hundred twenty-three".