8415722776772 has 6 divisors (see below), whose sum is σ = 14727514859358. Its totient is φ = 4207861388384.

The previous prime is 8415722776763. The next prime is 8415722776829. The reversal of 8415722776772 is 2776772275148.

It can be written as a sum of positive squares in only one way, i.e., 8135991797956 + 279730978816 = 2852366^2 + 528896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8415722776699 and 8415722776708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051965347093 + ... + 1051965347100.

It is an arithmetic number, because the mean of its divisors is an integer number (2454585809893).

Almost surely, 2^{8415722776772} is an apocalyptic number.

It is an amenable number.

8415722776772 is a deficient number, since it is larger than the sum of its proper divisors (6311792082586).

8415722776772 is a wasteful number, since it uses less digits than its factorization.

8415722776772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103930694197 (or 2103930694195 counting only the distinct ones).

The product of its digits is 129077760, while the sum is 65.

The spelling of 8415722776772 in words is "eight trillion, four hundred fifteen billion, seven hundred twenty-two million, seven hundred seventy-six thousand, seven hundred seventy-two".