42910779413 has 4 divisors (see below), whose sum is σ = 42912711660. Its totient is φ = 42908847168.

The previous prime is 42910779389. The next prime is 42910779433. The reversal of 42910779413 is 31497701924.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27809564644 + 15101214769 = 166762^2 + 122887^2 .

It is a cyclic number.

It is not a de Polignac number, because 42910779413 - 2¹⁰ = 42910778389 is a prime.

It is a super-2 number, since 2×42910779413² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42910779433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932420 + ... + 977357.

It is an arithmetic number, because the mean of its divisors is an integer number (10728177915).

Almost surely, 2^42910779413 is an apocalyptic number.

It is an amenable number.

42910779413 is a deficient number, since it is larger than the sum of its proper divisors (1932247).

42910779413 is a wasteful number, since it uses less digits than its factorization.

42910779413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932246.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 42910779413 in words is "forty-two billion, nine hundred ten million, seven hundred seventy-nine thousand, four hundred thirteen".