72913472251 has 2 divisors, whose sum is σ = 72913472252. Its totient is φ = 72913472250.

The previous prime is 72913472237. The next prime is 72913472263. The reversal of 72913472251 is 15227431927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72913472251 - 2¹³ = 72913464059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72913472198 and 72913472207.

It is not a weakly prime, because it can be changed into another prime (72913472201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36456736125 + 36456736126.

It is an arithmetic number, because the mean of its divisors is an integer number (36456736126).

Almost surely, 2^72913472251 is an apocalyptic number.

72913472251 is a deficient number, since it is larger than the sum of its proper divisors (1).

72913472251 is an equidigital number, since it uses as much as digits as its factorization.

72913472251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The spelling of 72913472251 in words is "seventy-two billion, nine hundred thirteen million, four hundred seventy-two thousand, two hundred fifty-one".