2106448551 has 16 divisors (see below), whose sum is σ = 3138105600. Its totient is φ = 1396450584.

The previous prime is 2106448501. The next prime is 2106448559. The reversal of 2106448551 is 1558446012.

It is a happy number.

2106448551 is a `hidden beast` number, since 2 + 1 + 0 + 64 + 48 + 551 = 666.

It is not a de Polignac number, because 2106448551 - 2⁷ = 2106448423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106448559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213091 + ... + 222756.

It is an arithmetic number, because the mean of its divisors is an integer number (196131600).

Almost surely, 2^2106448551 is an apocalyptic number.

2106448551 is a deficient number, since it is larger than the sum of its proper divisors (1031657049).

2106448551 is a wasteful number, since it uses less digits than its factorization.

2106448551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436035 (or 436029 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 2106448551 is about 45896.0624781691. The cubic root of 2106448551 is about 1281.8886002015. Note that the first 3 decimals are identical.

The spelling of 2106448551 in words is "two billion, one hundred six million, four hundred forty-eight thousand, five hundred fifty-one".