72407471029 has 2 divisors, whose sum is σ = 72407471030. Its totient is φ = 72407471028.

The previous prime is 72407471023. The next prime is 72407471083. The reversal of 72407471029 is 92017470427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67978568529 + 4428902500 = 260727^2 + 66550^2 .

It is a cyclic number.

It is not a de Polignac number, because 72407471029 - 2³ = 72407471021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72407471021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36203735514 + 36203735515.

It is an arithmetic number, because the mean of its divisors is an integer number (36203735515).

Almost surely, 2^72407471029 is an apocalyptic number.

It is an amenable number.

72407471029 is a deficient number, since it is larger than the sum of its proper divisors (1).

72407471029 is an equidigital number, since it uses as much as digits as its factorization.

72407471029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 72407471029 in words is "seventy-two billion, four hundred seven million, four hundred seventy-one thousand, twenty-nine".