16120615553 has 8 divisors (see below), whose sum is σ = 18427423872. Its totient is φ = 13814773056.

The previous prime is 16120615549. The next prime is 16120615559. The reversal of 16120615553 is 35551602161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16120615553 - 2² = 16120615549 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 (16120615559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205325 + ... + 272762.

It is an arithmetic number, because the mean of its divisors is an integer number (2303427984).

Almost surely, 2^16120615553 is an apocalyptic number.

It is an amenable number.

16120615553 is a deficient number, since it is larger than the sum of its proper divisors (2306808319).

16120615553 is an equidigital number, since it uses as much as digits as its factorization.

16120615553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482911.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 16120615553 in words is "sixteen billion, one hundred twenty million, six hundred fifteen thousand, five hundred fifty-three".