71551127051 has 4 divisors (see below), whose sum is σ = 72456837600. Its totient is φ = 70645416504.

The previous prime is 71551127009. The next prime is 71551127069. The reversal of 71551127051 is 15072115517.

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 71551127051 - 2⁶ = 71551126987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71551127251) 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, 452855156 + ... + 452855313.

It is an arithmetic number, because the mean of its divisors is an integer number (18114209400).

Almost surely, 2^71551127051 is an apocalyptic number.

71551127051 is a deficient number, since it is larger than the sum of its proper divisors (905710549).

71551127051 is an equidigital number, since it uses as much as digits as its factorization.

71551127051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905710548.

The product of its (nonzero) digits is 12250, while the sum is 35.

The spelling of 71551127051 in words is "seventy-one billion, five hundred fifty-one million, one hundred twenty-seven thousand, fifty-one".