1234554541545 has 64 divisors (see below), whose sum is σ = 2350292765184. Its totient is φ = 547158036480.

The previous prime is 1234554541531. The next prime is 1234554541547. The reversal of 1234554541545 is 5451454554321.

It is not a de Polignac number, because 1234554541545 - 2⁷ = 1234554541417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1234554541494 and 1234554541503.

It is not an unprimeable number, because it can be changed into a prime (1234554541547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8019726 + ... + 8172215.

It is an arithmetic number, because the mean of its divisors is an integer number (36723324456).

Almost surely, 2^{1234554541545} is an apocalyptic number.

1234554541545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1234554541545 is a deficient number, since it is larger than the sum of its proper divisors (1115738223639).

1234554541545 is a wasteful number, since it uses less digits than its factorization.

1234554541545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16192002.

The product of its digits is 4800000, while the sum is 48.

The spelling of 1234554541545 in words is "one trillion, two hundred thirty-four billion, five hundred fifty-four million, five hundred forty-one thousand, five hundred forty-five".