72305481914 has 8 divisors (see below), whose sum is σ = 114838118388. Its totient is φ = 34026109120.

The previous prime is 72305481907. The next prime is 72305481917. The reversal of 72305481914 is 41918450327.

It can be written as a sum of positive squares in 2 ways, for example, as 59988255625 + 12317226289 = 244925^2 + 110983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72305481914² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72305481917) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1063315877 + ... + 1063315944.

Almost surely, 2^72305481914 is an apocalyptic number.

72305481914 is a deficient number, since it is larger than the sum of its proper divisors (42532636474).

72305481914 is a wasteful number, since it uses less digits than its factorization.

72305481914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126631840.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 72305481914 in words is "seventy-two billion, three hundred five million, four hundred eighty-one thousand, nine hundred fourteen".