1173242261545 has 32 divisors (see below), whose sum is σ = 1436414563584. Its totient is φ = 919744761600.

The previous prime is 1173242261539. The next prime is 1173242261549. The reversal of 1173242261545 is 5451622423711.

It is not a de Polignac number, because 1173242261545 - 2¹⁵ = 1173242228777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1173242261549) 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, 147332734 + ... + 147340696.

It is an arithmetic number, because the mean of its divisors is an integer number (44887955112).

Almost surely, 2^{1173242261545} is an apocalyptic number.

It is an amenable number.

1173242261545 is a deficient number, since it is larger than the sum of its proper divisors (263172302039).

1173242261545 is a wasteful number, since it uses less digits than its factorization.

1173242261545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10513.

The product of its digits is 403200, while the sum is 43.

The spelling of 1173242261545 in words is "one trillion, one hundred seventy-three billion, two hundred forty-two million, two hundred sixty-one thousand, five hundred forty-five".