1158326977545 has 96 divisors (see below), whose sum is σ = 2061576934560. Its totient is φ = 601436897280.

The previous prime is 1158326977537. The next prime is 1158326977567. The reversal of 1158326977545 is 5457796238511.

1158326977545 is a `hidden beast` number, since 1 + 1 + 5 + 83 + 2 + 6 + 9 + 7 + 7 + 545 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 176985124416 + 981341853129 = 420696^2 + 990627^2 .

It is not a de Polignac number, because 1158326977545 - 2³ = 1158326977537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 446711769 + ... + 446714361.

It is an arithmetic number, because the mean of its divisors is an integer number (21474759735).

Almost surely, 2^{1158326977545} is an apocalyptic number.

1158326977545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1158326977545 is a deficient number, since it is larger than the sum of its proper divisors (903249957015).

1158326977545 is a wasteful number, since it uses less digits than its factorization.

1158326977545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267 (or 4264 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 63.

The spelling of 1158326977545 in words is "one trillion, one hundred fifty-eight billion, three hundred twenty-six million, nine hundred seventy-seven thousand, five hundred forty-five".