42115644213649 has 8 divisors (see below), whose sum is σ = 44605736062848. Its totient is φ = 39626963588160.

The previous prime is 42115644213637. The next prime is 42115644213719. The reversal of 42115644213649 is 94631244651124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42115644213649 - 2¹³ = 42115644205457 is a prime.

It is a super-4 number, since 4×42115644213649⁴ (a number of 56 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42115644213596 and 42115644213605.

It is not an unprimeable number, because it can be changed into a prime (42115644213449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352744477 + ... + 352863850.

It is an arithmetic number, because the mean of its divisors is an integer number (5575717007856).

Almost surely, 2^{42115644213649} is an apocalyptic number.

It is an amenable number.

42115644213649 is a deficient number, since it is larger than the sum of its proper divisors (2490091849199).

42115644213649 is a wasteful number, since it uses less digits than its factorization.

42115644213649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705611855.

The product of its digits is 4976640, while the sum is 52.

The spelling of 42115644213649 in words is "forty-two trillion, one hundred fifteen billion, six hundred forty-four million, two hundred thirteen thousand, six hundred forty-nine".