71178647401 has 4 divisors (see below), whose sum is σ = 71183770704. Its totient is φ = 71173524100.

The previous prime is 71178647389. The next prime is 71178647413. The reversal of 71178647401 is 10474687117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (71178647389) and next prime (71178647413).

It is a cyclic number.

It is not a de Polignac number, because 71178647401 - 2²³ = 71170258793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71178617401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540755 + ... + 2568616.

It is an arithmetic number, because the mean of its divisors is an integer number (17795942676).

Almost surely, 2^71178647401 is an apocalyptic number.

It is an amenable number.

71178647401 is a deficient number, since it is larger than the sum of its proper divisors (5123303).

71178647401 is a wasteful number, since it uses less digits than its factorization.

71178647401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123302.

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 71178647401 in words is "seventy-one billion, one hundred seventy-eight million, six hundred forty-seven thousand, four hundred one".