35646381947 has 4 divisors (see below), whose sum is σ = 38886962136. Its totient is φ = 32405801760.

The previous prime is 35646381931. The next prime is 35646382003. The reversal of 35646381947 is 74918364653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74918364653 = 11 ⋅6810760423.

It is a cyclic number.

It is not a de Polignac number, because 35646381947 - 2⁴ = 35646381931 is a prime.

It is a super-2 number, since 2×35646381947² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 35646381892 and 35646381901.

It is not an unprimeable number, because it can be changed into a prime (35646381647) 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, 1620290078 + ... + 1620290099.

It is an arithmetic number, because the mean of its divisors is an integer number (9721740534).

Almost surely, 2^35646381947 is an apocalyptic number.

35646381947 is a deficient number, since it is larger than the sum of its proper divisors (3240580189).

35646381947 is a wasteful number, since it uses less digits than its factorization.

35646381947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240580188.

The product of its digits is 13063680, while the sum is 56.

The spelling of 35646381947 in words is "thirty-five billion, six hundred forty-six million, three hundred eighty-one thousand, nine hundred forty-seven".