16121370043 has 4 divisors (see below), whose sum is σ = 16148194888. Its totient is φ = 16094545200.

The previous prime is 16121370037. The next prime is 16121370049. The reversal of 16121370043 is 34007312161.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (16121370037) and next prime (16121370049).

It is a cyclic number.

It is not a de Polignac number, because 16121370043 - 2³³ = 7531435451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16121369993 and 16121370020.

It is not an unprimeable number, because it can be changed into a prime (16121370049) 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, 13411521 + ... + 13412722.

It is an arithmetic number, because the mean of its divisors is an integer number (4037048722).

Almost surely, 2^16121370043 is an apocalyptic number.

16121370043 is a deficient number, since it is larger than the sum of its proper divisors (26824845).

16121370043 is an equidigital number, since it uses as much as digits as its factorization.

16121370043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26824844.

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 16121370043 in words is "sixteen billion, one hundred twenty-one million, three hundred seventy thousand, forty-three".