42474785884649 has 4 divisors (see below), whose sum is σ = 42474800639700. Its totient is φ = 42474771129600.

The previous prime is 42474785884607. The next prime is 42474785884651. The reversal of 42474785884649 is 94648858747424.

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 25246002211600 + 17228783673049 = 5024540^2 + 4150757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42474785884649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42474785887649) 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, 1497224 + ... + 9337625.

It is an arithmetic number, because the mean of its divisors is an integer number (10618700159925).

Almost surely, 2^{42474785884649} is an apocalyptic number.

It is an amenable number.

42474785884649 is a deficient number, since it is larger than the sum of its proper divisors (14755051).

42474785884649 is a wasteful number, since it uses less digits than its factorization.

42474785884649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14755050.

The product of its digits is 13872660480, while the sum is 80.

The spelling of 42474785884649 in words is "forty-two trillion, four hundred seventy-four billion, seven hundred eighty-five million, eight hundred eighty-four thousand, six hundred forty-nine".