3661654231553 has 8 divisors (see below), whose sum is σ = 3788907962400. Its totient is φ = 3536314090848.

The previous prime is 3661654231531. The next prime is 3661654231559. The reversal of 3661654231553 is 3551324561663.

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 3661654231553 - 2¹² = 3661654227457 is a prime.

It is a super-2 number, since 2×3661654231553² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3661654231559) 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 7 ways as a sum of consecutive naturals, for example, 478393643 + ... + 478401296.

It is an arithmetic number, because the mean of its divisors is an integer number (473613495300).

Almost surely, 2^{3661654231553} is an apocalyptic number.

It is an amenable number.

3661654231553 is a deficient number, since it is larger than the sum of its proper divisors (127253730847).

3661654231553 is an equidigital number, since it uses as much as digits as its factorization.

3661654231553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956795071.

The product of its digits is 5832000, while the sum is 50.

The spelling of 3661654231553 in words is "three trillion, six hundred sixty-one billion, six hundred fifty-four million, two hundred thirty-one thousand, five hundred fifty-three".