72245816673487 has 2 divisors, whose sum is σ = 72245816673488. Its totient is φ = 72245816673486.

The previous prime is 72245816673469. The next prime is 72245816673491. The reversal of 72245816673487 is 78437661854227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72245816673487 - 2²³ = 72245808284879 is a prime.

It is a super-3 number, since 3×72245816673487³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72245816673467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122908336743 + 36122908336744.

It is an arithmetic number, because the mean of its divisors is an integer number (36122908336744).

Almost surely, 2^{72245816673487} is an apocalyptic number.

72245816673487 is a deficient number, since it is larger than the sum of its proper divisors (1).

72245816673487 is an equidigital number, since it uses as much as digits as its factorization.

72245816673487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 758661120, while the sum is 70.

The spelling of 72245816673487 in words is "seventy-two trillion, two hundred forty-five billion, eight hundred sixteen million, six hundred seventy-three thousand, four hundred eighty-seven".