16155216002 has 4 divisors (see below), whose sum is σ = 24232824006. Its totient is φ = 8077608000.

The previous prime is 16155215981. The next prime is 16155216023. The reversal of 16155216002 is 20061255161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20061255161 = 17 ⋅1180073833.

It is an interprime number because it is at equal distance from previous prime (16155215981) and next prime (16155216023).

It can be written as a sum of positive squares in only one way, i.e., 12943840441 + 3211375561 = 113771^2 + 56669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4038803999 + ... + 4038804002.

Almost surely, 2^16155216002 is an apocalyptic number.

16155216002 is a deficient number, since it is larger than the sum of its proper divisors (8077608004).

16155216002 is an equidigital number, since it uses as much as digits as its factorization.

16155216002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077608003.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 16155216002 in words is "sixteen billion, one hundred fifty-five million, two hundred sixteen thousand, two".