16061214621 has 4 divisors (see below), whose sum is σ = 21414952832. Its totient is φ = 10707476412.

The previous prime is 16061214619. The next prime is 16061214629. The reversal of 16061214621 is 12641216061.

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: 12641216061 = 3 ⋅4213738687.

It is not a de Polignac number, because 16061214621 - 2¹ = 16061214619 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 (16061214629) 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, 2676869101 + ... + 2676869106.

It is an arithmetic number, because the mean of its divisors is an integer number (5353738208).

Almost surely, 2^16061214621 is an apocalyptic number.

It is an amenable number.

16061214621 is a deficient number, since it is larger than the sum of its proper divisors (5353738211).

16061214621 is an equidigital number, since it uses as much as digits as its factorization.

16061214621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353738210.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 16061214621 in words is "sixteen billion, sixty-one million, two hundred fourteen thousand, six hundred twenty-one".