7461665553 has 16 divisors (see below), whose sum is σ = 9980472320. Its totient is φ = 4958678736.

The previous prime is 7461665521. The next prime is 7461665567. The reversal of 7461665553 is 3555661647.

7461665553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7461665553 - 2⁵ = 7461665521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7461665753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347276 + ... + 1352802.

It is an arithmetic number, because the mean of its divisors is an integer number (623779520).

Almost surely, 2^7461665553 is an apocalyptic number.

It is an amenable number.

7461665553 is a deficient number, since it is larger than the sum of its proper divisors (2518806767).

7461665553 is a wasteful number, since it uses less digits than its factorization.

7461665553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6876.

The product of its digits is 2268000, while the sum is 48.

The square root of 7461665553 is about 86380.9328092722. The cubic root of 7461665553 is about 1954.0931382692.

The spelling of 7461665553 in words is "seven billion, four hundred sixty-one million, six hundred sixty-five thousand, five hundred fifty-three".