77220426105 has 12 divisors (see below), whose sum is σ = 133848738660. Its totient is φ = 41184227232.

The previous prime is 77220426103. The next prime is 77220426131. The reversal of 77220426105 is 50162402277.

It is a happy number.

77220426105 is a `hidden beast` number, since 7 + 7 + 220 + 426 + 1 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54409761081 + 22810665024 = 233259^2 + 151032^2 .

It is not a de Polignac number, because 77220426105 - 2¹ = 77220426103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77220426105.

It is not an unprimeable number, because it can be changed into a prime (77220426103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858004690 + ... + 858004779.

It is an arithmetic number, because the mean of its divisors is an integer number (11154061555).

Almost surely, 2^77220426105 is an apocalyptic number.

It is an amenable number.

77220426105 is a deficient number, since it is larger than the sum of its proper divisors (56628312555).

77220426105 is a wasteful number, since it uses less digits than its factorization.

77220426105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716009480 (or 1716009477 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 77220426105 in words is "seventy-seven billion, two hundred twenty million, four hundred twenty-six thousand, one hundred five".