1173242261505 has 16 divisors (see below), whose sum is σ = 1878132400704. Its totient is φ = 625414278720.

The previous prime is 1173242261501. The next prime is 1173242261519. The reversal of 1173242261505 is 5051622423711.

It is not a de Polignac number, because 1173242261505 - 2² = 1173242261501 is a prime.

It is a super-3 number, since 3×1173242261505³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1173242261501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19652166 + ... + 19711775.

It is an arithmetic number, because the mean of its divisors is an integer number (117383275044).

Almost surely, 2^{1173242261505} is an apocalyptic number.

1173242261505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1173242261505 is a deficient number, since it is larger than the sum of its proper divisors (704890139199).

1173242261505 is a wasteful number, since it uses less digits than its factorization.

1173242261505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39365936.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 1173242261505 in words is "one trillion, one hundred seventy-three billion, two hundred forty-two million, two hundred sixty-one thousand, five hundred five".