445551516777071 has 4 divisors (see below), whose sum is σ = 445629179588592. Its totient is φ = 445473853965552.

The previous prime is 445551516777067. The next prime is 445551516777131. The reversal of 445551516777071 is 170777615155544.

It is a happy number.

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 445551516777071 - 2² = 445551516777067 is a prime.

It is a super-2 number, since 2×445551516777071² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445551516776989 and 445551516777007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445551516777271) 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, 38831397155 + ... + 38831408628.

It is an arithmetic number, because the mean of its divisors is an integer number (111407294897148).

Almost surely, 2^{445551516777071} is an apocalyptic number.

445551516777071 is a deficient number, since it is larger than the sum of its proper divisors (77662811521).

445551516777071 is an equidigital number, since it uses as much as digits as its factorization.

445551516777071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77662811520.

The product of its (nonzero) digits is 144060000, while the sum is 65.

The spelling of 445551516777071 in words is "four hundred forty-five trillion, five hundred fifty-one billion, five hundred sixteen million, seven hundred seventy-seven thousand, seventy-one".