42770664217615 has 4 divisors (see below), whose sum is σ = 51324797061144. Its totient is φ = 34216531374088.

The previous prime is 42770664217613. The next prime is 42770664217643. The reversal of 42770664217615 is 51671246607724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42770664217615 - 2¹ = 42770664217613 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42770664217615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42770664217613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277066421757 + ... + 4277066421766.

It is an arithmetic number, because the mean of its divisors is an integer number (12831199265286).

Almost surely, 2^{42770664217615} is an apocalyptic number.

42770664217615 is a deficient number, since it is larger than the sum of its proper divisors (8554132843529).

42770664217615 is an equidigital number, since it uses as much as digits as its factorization.

42770664217615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8554132843528.

The product of its (nonzero) digits is 23708160, while the sum is 58.

The spelling of 42770664217615 in words is "forty-two trillion, seven hundred seventy billion, six hundred sixty-four million, two hundred seventeen thousand, six hundred fifteen".