77899278307628 has 48 divisors (see below), whose sum is σ = 145173444593184. Its totient is φ = 36448092549120.

The previous prime is 77899278307537. The next prime is 77899278307663. The reversal of 77899278307628 is 82670387299877.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4271975 + ... + 13192737.

It is an arithmetic number, because the mean of its divisors is an integer number (3024446762358).

Almost surely, 2^{77899278307628} is an apocalyptic number.

It is an amenable number.

77899278307628 is a deficient number, since it is larger than the sum of its proper divisors (67274166285556).

77899278307628 is a wasteful number, since it uses less digits than its factorization.

77899278307628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921522 (or 8921520 counting only the distinct ones).

The product of its (nonzero) digits is 7169347584, while the sum is 83.

The spelling of 77899278307628 in words is "seventy-seven trillion, eight hundred ninety-nine billion, two hundred seventy-eight million, three hundred seven thousand, six hundred twenty-eight".