115513553505545 has 16 divisors (see below), whose sum is σ = 149472170325072. Its totient is φ = 85191964112640.

The previous prime is 115513553505541. The next prime is 115513553505583. The reversal of 115513553505545 is 545505355315511.

It can be written as a sum of positive squares in 8 ways, for example, as 27683424342016 + 87830129163529 = 5261504^2 + 9371773^2 .

It is not a de Polignac number, because 115513553505545 - 2² = 115513553505541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115513553505541) 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, 1149452726 + ... + 1149553215.

It is an arithmetic number, because the mean of its divisors is an integer number (9342010645317).

Almost surely, 2^{115513553505545} is an apocalyptic number.

It is an amenable number.

115513553505545 is a deficient number, since it is larger than the sum of its proper divisors (33958616819527).

115513553505545 is a wasteful number, since it uses less digits than its factorization.

115513553505545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299006732.

The product of its (nonzero) digits is 14062500, while the sum is 53.

The spelling of 115513553505545 in words is "one hundred fifteen trillion, five hundred thirteen billion, five hundred fifty-three million, five hundred five thousand, five hundred forty-five".