1161552601465 has 16 divisors (see below), whose sum is σ = 1406830510800. Its totient is φ = 920599333632.

The previous prime is 1161552601457. The next prime is 1161552601477. The reversal of 1161552601465 is 5641062551611.

It can be written as a sum of positive squares in 8 ways, for example, as 43958992896 + 1117593608569 = 209664^2 + 1057163^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161552601465 - 2³ = 1161552601457 is a prime.

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, 4265539 + ... + 4529671.

It is an arithmetic number, because the mean of its divisors is an integer number (87926906925).

Almost surely, 2^{1161552601465} is an apocalyptic number.

It is an amenable number.

1161552601465 is a deficient number, since it is larger than the sum of its proper divisors (245277909335).

1161552601465 is a wasteful number, since it uses less digits than its factorization.

1161552601465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272316.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 1161552601465 in words is "one trillion, one hundred sixty-one billion, five hundred fifty-two million, six hundred one thousand, four hundred sixty-five".