71945138303 has 8 divisors (see below), whose sum is σ = 78634535040. Its totient is φ = 65528778240.

The previous prime is 71945138261. The next prime is 71945138327. The reversal of 71945138303 is 30383154917.

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 71945138303 - 2¹² = 71945134207 is a prime.

It is a super-2 number, since 2×71945138303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71945108303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68258618 + ... + 68259671.

It is an arithmetic number, because the mean of its divisors is an integer number (9829316880).

Almost surely, 2^71945138303 is an apocalyptic number.

71945138303 is a deficient number, since it is larger than the sum of its proper divisors (6689396737).

71945138303 is a wasteful number, since it uses less digits than its factorization.

71945138303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136518337.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 71945138303 in words is "seventy-one billion, nine hundred forty-five million, one hundred thirty-eight thousand, three hundred three".