71577877106 has 4 divisors (see below), whose sum is σ = 107366815662. Its totient is φ = 35788938552.

The previous prime is 71577877093. The next prime is 71577877139. The reversal of 71577877106 is 60177877517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60177877517 = 54647 ⋅1101211.

It can be written as a sum of positive squares in only one way, i.e., 67995256081 + 3582621025 = 260759^2 + 59855^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17894469275 + ... + 17894469278.

Almost surely, 2^71577877106 is an apocalyptic number.

71577877106 is a deficient number, since it is larger than the sum of its proper divisors (35788938556).

71577877106 is a wasteful number, since it uses less digits than its factorization.

71577877106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35788938555.

The product of its (nonzero) digits is 4033680, while the sum is 56.

The spelling of 71577877106 in words is "seventy-one billion, five hundred seventy-seven million, eight hundred seventy-seven thousand, one hundred six".