42512981254515 has 48 divisors (see below), whose sum is σ = 77568741787680. Its totient is φ = 21479911672320.

The previous prime is 42512981254463. The next prime is 42512981254517. The reversal of 42512981254515 is 51545218921524.

42512981254515 is a `hidden beast` number, since 4 + 2 + 5 + 1 + 2 + 9 + 81 + 2 + 545 + 15 = 666.

It is not a de Polignac number, because 42512981254515 - 2¹⁸ = 42512980992371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42512981254517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60744375 + ... + 61440255.

It is an arithmetic number, because the mean of its divisors is an integer number (1616015453910).

Almost surely, 2^{42512981254515} is an apocalyptic number.

42512981254515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42512981254515 is a deficient number, since it is larger than the sum of its proper divisors (35055760533165).

42512981254515 is a wasteful number, since it uses less digits than its factorization.

42512981254515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767364 (or 767361 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 54.

The spelling of 42512981254515 in words is "forty-two trillion, five hundred twelve billion, nine hundred eighty-one million, two hundred fifty-four thousand, five hundred fifteen".