1143521001545 has 64 divisors (see below), whose sum is σ = 1569529833984. Its totient is φ = 793396961280.

The previous prime is 1143521001541. The next prime is 1143521001551. The reversal of 1143521001545 is 5451001253411.

It is not a de Polignac number, because 1143521001545 - 2² = 1143521001541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143521001541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35342075 + ... + 35374415.

It is an arithmetic number, because the mean of its divisors is an integer number (24523903656).

Almost surely, 2^{1143521001545} is an apocalyptic number.

It is an amenable number.

1143521001545 is a deficient number, since it is larger than the sum of its proper divisors (426008832439).

1143521001545 is a wasteful number, since it uses less digits than its factorization.

1143521001545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32802.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 1143521001545 its reverse (5451001253411), we get a palindrome (6594522254956).

The spelling of 1143521001545 in words is "one trillion, one hundred forty-three billion, five hundred twenty-one million, one thousand, five hundred forty-five".