71380251053 has 8 divisors (see below), whose sum is σ = 73136479416. Its totient is φ = 69624748800.

The previous prime is 71380251029. The next prime is 71380251073. The reversal of 71380251053 is 35015208317.

It can be written as a sum of positive squares in 4 ways, for example, as 446984164 + 70933266889 = 21142^2 + 266333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71380251053 - 2⁸ = 71380250797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71380251073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20225 + ... + 378377.

It is an arithmetic number, because the mean of its divisors is an integer number (9142059927).

Almost surely, 2^71380251053 is an apocalyptic number.

It is an amenable number.

71380251053 is a deficient number, since it is larger than the sum of its proper divisors (1756228363).

71380251053 is a wasteful number, since it uses less digits than its factorization.

71380251053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363055.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 71380251053 in words is "seventy-one billion, three hundred eighty million, two hundred fifty-one thousand, fifty-three".