71040667777 has 8 divisors (see below), whose sum is σ = 71145559872. Its totient is φ = 70935822000.

The previous prime is 71040667769. The next prime is 71040667807. The reversal of 71040667777 is 77776604017.

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 71040667777 - 2³ = 71040667769 is a prime.

It is a super-2 number, since 2×71040667777² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71040667717) 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, 4085652 + ... + 4103002.

It is an arithmetic number, because the mean of its divisors is an integer number (8893194984).

Almost surely, 2^71040667777 is an apocalyptic number.

It is an amenable number.

71040667777 is a deficient number, since it is larger than the sum of its proper divisors (104892095).

71040667777 is a wasteful number, since it uses less digits than its factorization.

71040667777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23159.

The product of its (nonzero) digits is 2420208, while the sum is 52.

The spelling of 71040667777 in words is "seventy-one billion, forty million, six hundred sixty-seven thousand, seven hundred seventy-seven".