42554520577517 has 32 divisors (see below), whose sum is σ = 50011907137920. Its totient is φ = 35868596705280.

The previous prime is 42554520577487. The next prime is 42554520577553. The reversal of 42554520577517 is 71577502545524.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-42554520577517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42554520577817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24473228 + ... + 26154309.

It is an arithmetic number, because the mean of its divisors is an integer number (1562872098060).

Almost surely, 2^{42554520577517} is an apocalyptic number.

It is an amenable number.

42554520577517 is a deficient number, since it is larger than the sum of its proper divisors (7457386560403).

42554520577517 is a wasteful number, since it uses less digits than its factorization.

42554520577517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50627693.

The product of its (nonzero) digits is 68600000, while the sum is 59.

The spelling of 42554520577517 in words is "forty-two trillion, five hundred fifty-four billion, five hundred twenty million, five hundred seventy-seven thousand, five hundred seventeen".