42679191545 has 16 divisors (see below), whose sum is σ = 52233394320. Its totient is φ = 33465729024.

The previous prime is 42679191539. The next prime is 42679191551. The reversal of 42679191545 is 54519197624.

It is an interprime number because it is at equal distance from previous prime (42679191539) and next prime (42679191551).

It can be written as a sum of positive squares in 8 ways, for example, as 7843582096 + 34835609449 = 88564^2 + 186643^2 .

It is a cyclic number.

It is not a de Polignac number, because 42679191545 - 2¹⁸ = 42678929401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187577 + ... + 347193.

It is an arithmetic number, because the mean of its divisors is an integer number (3264587145).

Almost surely, 2^42679191545 is an apocalyptic number.

It is an amenable number.

42679191545 is a deficient number, since it is larger than the sum of its proper divisors (9554202775).

42679191545 is a wasteful number, since it uses less digits than its factorization.

42679191545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160684.

The product of its digits is 2721600, while the sum is 53.

The spelling of 42679191545 in words is "forty-two billion, six hundred seventy-nine million, one hundred ninety-one thousand, five hundred forty-five".