445778807423477 has 16 divisors (see below), whose sum is σ = 498167302114944. Its totient is φ = 395367586368000.

The previous prime is 445778807423471. The next prime is 445778807423497. The reversal of 445778807423477 is 774324708877544.

It is a cyclic number.

It is not a de Polignac number, because 445778807423477 - 2⁴ = 445778807423461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445778807423398 and 445778807423407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445778807423471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113741453 + ... + 117595389.

It is an arithmetic number, because the mean of its divisors is an integer number (31135456382184).

Almost surely, 2^{445778807423477} is an apocalyptic number.

It is an amenable number.

445778807423477 is a deficient number, since it is larger than the sum of its proper divisors (52388494691467).

445778807423477 is a wasteful number, since it uses less digits than its factorization.

445778807423477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110460.

The product of its (nonzero) digits is 8260976640, while the sum is 77.

The spelling of 445778807423477 in words is "four hundred forty-five trillion, seven hundred seventy-eight billion, eight hundred seven million, four hundred twenty-three thousand, four hundred seventy-seven".