16631012145 has 64 divisors (see below), whose sum is σ = 29521739520. Its totient is φ = 7927603200.

The previous prime is 16631012141. The next prime is 16631012147. The reversal of 16631012145 is 54121013661.

It is a happy number.

It is not a de Polignac number, because 16631012145 - 2² = 16631012141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16631012141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2654857 + ... + 2661113.

It is an arithmetic number, because the mean of its divisors is an integer number (461277180).

Almost surely, 2^16631012145 is an apocalyptic number.

16631012145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16631012145 is a deficient number, since it is larger than the sum of its proper divisors (12890727375).

16631012145 is a wasteful number, since it uses less digits than its factorization.

16631012145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 16631012145 in words is "sixteen billion, six hundred thirty-one million, twelve thousand, one hundred forty-five".