1172120566552 has 16 divisors (see below), whose sum is σ = 2366781913440. Its totient is φ = 540978722976.

The previous prime is 1172120566517. The next prime is 1172120566553. The reversal of 1172120566552 is 2556650212711.

It is a super-2 number, since 2×1172120566552² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1172120566499 and 1172120566508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172120566553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5635194928 + ... + 5635195135.

It is an arithmetic number, because the mean of its divisors is an integer number (147923869590).

Almost surely, 2^{1172120566552} is an apocalyptic number.

It is an amenable number.

1172120566552 is an abundant number, since it is smaller than the sum of its proper divisors (1194661346888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1172120566552 is a wasteful number, since it uses less digits than its factorization.

1172120566552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11270390082 (or 11270390078 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 1172120566552 in words is "one trillion, one hundred seventy-two billion, one hundred twenty million, five hundred sixty-six thousand, five hundred fifty-two".