28077157712 has 10 divisors (see below), whose sum is σ = 54399493098. Its totient is φ = 14038578848.

The previous prime is 28077157637. The next prime is 28077157753. The reversal of 28077157712 is 21775177082.

It can be written as a sum of positive squares in only one way, i.e., 27170906896 + 906250816 = 164836^2 + 30104^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 877411163 + ... + 877411194.

Almost surely, 2^28077157712 is an apocalyptic number.

It is an amenable number.

28077157712 is a deficient number, since it is larger than the sum of its proper divisors (26322335386).

28077157712 is a wasteful number, since it uses less digits than its factorization.

28077157712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754822365 (or 1754822359 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 47.

The spelling of 28077157712 in words is "twenty-eight billion, seventy-seven million, one hundred fifty-seven thousand, seven hundred twelve".