72015671311 has 2 divisors, whose sum is σ = 72015671312. Its totient is φ = 72015671310.

The previous prime is 72015671263. The next prime is 72015671347. The reversal of 72015671311 is 11317651027.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72015671311 - 2¹³ = 72015663119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72015678311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36007835655 + 36007835656.

It is an arithmetic number, because the mean of its divisors is an integer number (36007835656).

Almost surely, 2^72015671311 is an apocalyptic number.

72015671311 is a deficient number, since it is larger than the sum of its proper divisors (1).

72015671311 is an equidigital number, since it uses as much as digits as its factorization.

72015671311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

The spelling of 72015671311 in words is "seventy-two billion, fifteen million, six hundred seventy-one thousand, three hundred eleven".