77221354099 has 8 divisors (see below), whose sum is σ = 77636714112. Its totient is φ = 76806151680.

The previous prime is 77221354097. The next prime is 77221354109. The reversal of 77221354099 is 99045312277.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77221354099 - 2¹ = 77221354097 is a prime.

It is a super-3 number, since 3×77221354099³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77221354097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019337 + ... + 1092469.

It is an arithmetic number, because the mean of its divisors is an integer number (9704589264).

Almost surely, 2^77221354099 is an apocalyptic number.

77221354099 is a deficient number, since it is larger than the sum of its proper divisors (415360013).

77221354099 is a wasteful number, since it uses less digits than its factorization.

77221354099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78797.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 77221354099 in words is "seventy-seven billion, two hundred twenty-one million, three hundred fifty-four thousand, ninety-nine".