611145432545 has 4 divisors (see below), whose sum is σ = 733374519060. Its totient is φ = 488916346032.

The previous prime is 611145432533. The next prime is 611145432571. The reversal of 611145432545 is 545234541116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132646738849 + 478498693696 = 364207^2 + 691736^2 .

It is a cyclic number.

It is not a de Polignac number, because 611145432545 - 2¹⁰ = 611145431521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61114543250 + ... + 61114543259.

It is an arithmetic number, because the mean of its divisors is an integer number (183343629765).

Almost surely, 2^611145432545 is an apocalyptic number.

It is an amenable number.

611145432545 is a deficient number, since it is larger than the sum of its proper divisors (122229086515).

611145432545 is a wasteful number, since it uses less digits than its factorization.

611145432545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122229086514.

The product of its digits is 288000, while the sum is 41.

The spelling of 611145432545 in words is "six hundred eleven billion, one hundred forty-five million, four hundred thirty-two thousand, five hundred forty-five".