77755280006 has 16 divisors (see below), whose sum is σ = 118275391104. Its totient is φ = 38330553024.

The previous prime is 77755280003. The next prime is 77755280023. The reversal of 77755280006 is 60008255777.

It is a happy number.

It is a super-2 number, since 2×77755280006² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77755280003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291371 + ... + 490313.

It is an arithmetic number, because the mean of its divisors is an integer number (7392211944).

Almost surely, 2^77755280006 is an apocalyptic number.

77755280006 is a deficient number, since it is larger than the sum of its proper divisors (40520111098).

77755280006 is a wasteful number, since it uses less digits than its factorization.

77755280006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201695.

The product of its (nonzero) digits is 823200, while the sum is 47.

The spelling of 77755280006 in words is "seventy-seven billion, seven hundred fifty-five million, two hundred eighty thousand, six".