11630616421 has 4 divisors (see below), whose sum is σ = 11630928844. Its totient is φ = 11630304000.

The previous prime is 11630616409. The next prime is 11630616461. The reversal of 11630616421 is 12461603611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12461603611 = 5743 ⋅2169877.

It can be written as a sum of positive squares in 2 ways, for example, as 9271571521 + 2359044900 = 96289^2 + 48570^2 .

It is a cyclic number.

It is not a de Polignac number, because 11630616421 - 2¹³ = 11630608229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11630616401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91410 + ... + 177811.

It is an arithmetic number, because the mean of its divisors is an integer number (2907732211).

Almost surely, 2^11630616421 is an apocalyptic number.

It is an amenable number.

11630616421 is a deficient number, since it is larger than the sum of its proper divisors (312423).

11630616421 is an equidigital number, since it uses as much as digits as its factorization.

11630616421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312422.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 11630616421 in words is "eleven billion, six hundred thirty million, six hundred sixteen thousand, four hundred twenty-one".