36521505641 has 4 divisors (see below), whose sum is σ = 36522939984. Its totient is φ = 36520071300.

The previous prime is 36521505623. The next prime is 36521505659. The reversal of 36521505641 is 14650512563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14650512563 = 37 ⋅395959799.

It is an interprime number because it is at equal distance from previous prime (36521505623) and next prime (36521505659).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36521505641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36521505595 and 36521505604.

It is not an unprimeable number, because it can be changed into a prime (36521505611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678275 + ... + 730136.

It is an arithmetic number, because the mean of its divisors is an integer number (9130734996).

Almost surely, 2^36521505641 is an apocalyptic number.

It is an amenable number.

36521505641 is a deficient number, since it is larger than the sum of its proper divisors (1434343).

36521505641 is a wasteful number, since it uses less digits than its factorization.

36521505641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434342.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 36521505641 in words is "thirty-six billion, five hundred twenty-one million, five hundred five thousand, six hundred forty-one".