71541755551 has 8 divisors (see below), whose sum is σ = 83663448704. Its totient is φ = 59895423000.

The previous prime is 71541755539. The next prime is 71541755569. The reversal of 71541755551 is 15555714517.

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

It is not a de Polignac number, because 71541755551 - 2¹³ = 71541747359 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 (71541755521) 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, 118839825 + ... + 118840426.

It is an arithmetic number, because the mean of its divisors is an integer number (10457931088).

Almost surely, 2^71541755551 is an apocalyptic number.

71541755551 is a deficient number, since it is larger than the sum of its proper divisors (12121693153).

71541755551 is a wasteful number, since it uses less digits than its factorization.

71541755551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237680301.

The product of its digits is 612500, while the sum is 46.

The spelling of 71541755551 in words is "seventy-one billion, five hundred forty-one million, seven hundred fifty-five thousand, five hundred fifty-one".