8449861267556 has 6 divisors (see below), whose sum is σ = 14787257218230. Its totient is φ = 4224930633776.

The previous prime is 8449861267541. The next prime is 8449861267567. The reversal of 8449861267556 is 6557621689448.

It can be written as a sum of positive squares in only one way, i.e., 6470307942400 + 1979553325156 = 2543680^2 + 1406966^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8449861267556.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056232658441 + ... + 1056232658448.

It is an arithmetic number, because the mean of its divisors is an integer number (2464542869705).

Almost surely, 2^{8449861267556} is an apocalyptic number.

It is an amenable number.

8449861267556 is a deficient number, since it is larger than the sum of its proper divisors (6337395950674).

8449861267556 is a wasteful number, since it uses less digits than its factorization.

8449861267556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112465316893 (or 2112465316891 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 71.

The spelling of 8449861267556 in words is "eight trillion, four hundred forty-nine billion, eight hundred sixty-one million, two hundred sixty-seven thousand, five hundred fifty-six".