44478020047 has 2 divisors, whose sum is σ = 44478020048. Its totient is φ = 44478020046.

The previous prime is 44478020029. The next prime is 44478020063. The reversal of 44478020047 is 74002087444.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44478020047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44478019991 and 44478020009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44478020947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22239010023 + 22239010024.

It is an arithmetic number, because the mean of its divisors is an integer number (22239010024).

Almost surely, 2^44478020047 is an apocalyptic number.

44478020047 is a deficient number, since it is larger than the sum of its proper divisors (1).

44478020047 is an equidigital number, since it uses as much as digits as its factorization.

44478020047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200704, while the sum is 40.

The spelling of 44478020047 in words is "forty-four billion, four hundred seventy-eight million, twenty thousand, forty-seven".