16401213051 has 4 divisors (see below), whose sum is σ = 21868284072. Its totient is φ = 10934142032.

The previous prime is 16401213019. The next prime is 16401213053. The reversal of 16401213051 is 15031210461.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16401213051 - 2⁵ = 16401213019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16401213053) 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, 2733535506 + ... + 2733535511.

It is an arithmetic number, because the mean of its divisors is an integer number (5467071018).

Almost surely, 2^16401213051 is an apocalyptic number.

16401213051 is a deficient number, since it is larger than the sum of its proper divisors (5467071021).

16401213051 is an equidigital number, since it uses as much as digits as its factorization.

16401213051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467071020.

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 16401213051 in words is "sixteen billion, four hundred one million, two hundred thirteen thousand, fifty-one".