71513878380001 has 4 divisors (see below), whose sum is σ = 71600143614100. Its totient is φ = 71427613145904.

The previous prime is 71513878379989. The next prime is 71513878380013. The reversal of 71513878380001 is 10008387831517.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (71513878379989) and next prime (71513878380013).

It can be written as a sum of positive squares in 2 ways, for example, as 48856744857600 + 22657133522401 = 6989760^2 + 4759951^2 .

It is a cyclic number.

It is not a de Polignac number, because 71513878380001 - 2⁷ = 71513878379873 is a prime.

It is a super-2 number, since 2×71513878380001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71513878380071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43132615806 + ... + 43132617463.

It is an arithmetic number, because the mean of its divisors is an integer number (17900035903525).

Almost surely, 2^{71513878380001} is an apocalyptic number.

It is an amenable number.

71513878380001 is a deficient number, since it is larger than the sum of its proper divisors (86265234099).

71513878380001 is an equidigital number, since it uses as much as digits as its factorization.

71513878380001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86265234098.

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 71513878380001 in words is "seventy-one trillion, five hundred thirteen billion, eight hundred seventy-eight million, three hundred eighty thousand, one".