1153064655561 has 32 divisors (see below), whose sum is σ = 1892480486400. Its totient is φ = 608122557504.

The previous prime is 1153064655553. The next prime is 1153064655571. The reversal of 1153064655561 is 1655564603511.

It is a happy number.

It is not a de Polignac number, because 1153064655561 - 2³ = 1153064655553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1153064655561.

It is not an unprimeable number, because it can be changed into a prime (1153064655551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1622890 + ... + 2222588.

It is an arithmetic number, because the mean of its divisors is an integer number (59140015200).

Almost surely, 2^{1153064655561} is an apocalyptic number.

It is an amenable number.

1153064655561 is a deficient number, since it is larger than the sum of its proper divisors (739415830839).

1153064655561 is a wasteful number, since it uses less digits than its factorization.

1153064655561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606765.

The product of its (nonzero) digits is 1620000, while the sum is 48.

The spelling of 1153064655561 in words is "one trillion, one hundred fifty-three billion, sixty-four million, six hundred fifty-five thousand, five hundred sixty-one".