36551505335561 has 8 divisors (see below), whose sum is σ = 38431769320200. Its totient is φ = 34712565834240.

The previous prime is 36551505335549. The next prime is 36551505335573. The reversal of 36551505335561 is 16553350515563.

It is an interprime number because it is at equal distance from previous prime (36551505335549) and next prime (36551505335573).

It can be written as a sum of positive squares in 4 ways, for example, as 3331774849225 + 33219730486336 = 1825315^2 + 5763656^2 .

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 36551505335561 - 2¹⁴ = 36551505319177 is a prime.

It is a super-2 number, since 2×36551505335561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36551505335861) 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, 10331119016 + ... + 10331122553.

It is an arithmetic number, because the mean of its divisors is an integer number (4803971165025).

Almost surely, 2^{36551505335561} is an apocalyptic number.

It is an amenable number.

36551505335561 is a deficient number, since it is larger than the sum of its proper divisors (1880263984639).

36551505335561 is a wasteful number, since it uses less digits than its factorization.

36551505335561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662241659.

The product of its (nonzero) digits is 15187500, while the sum is 53.

The spelling of 36551505335561 in words is "thirty-six trillion, five hundred fifty-one billion, five hundred five million, three hundred thirty-five thousand, five hundred sixty-one".