71555440142303 has 4 divisors (see below), whose sum is σ = 77059704768648. Its totient is φ = 66051175515960.

The previous prime is 71555440142293. The next prime is 71555440142357. The reversal of 71555440142303 is 30324104455517.

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

It is a cyclic number.

It is not a de Polignac number, because 71555440142303 - 2⁸ = 71555440142047 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 (71555440142503) 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, 2752132313153 + ... + 2752132313178.

It is an arithmetic number, because the mean of its divisors is an integer number (19264926192162).

Almost surely, 2^{71555440142303} is an apocalyptic number.

71555440142303 is a deficient number, since it is larger than the sum of its proper divisors (5504264626345).

71555440142303 is a wasteful number, since it uses less digits than its factorization.

71555440142303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504264626344.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 71555440142303 in words is "seventy-one trillion, five hundred fifty-five billion, four hundred forty million, one hundred forty-two thousand, three hundred three".