10551001665 has 16 divisors (see below), whose sum is σ = 16882920000. Its totient is φ = 5626761792.

The previous prime is 10551001649. The next prime is 10551001673. The reversal of 10551001665 is 56610015501.

It is not a de Polignac number, because 10551001665 - 2⁴ = 10551001649 is a prime.

It is a super-2 number, since 2×10551001665² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288586 + ... + 323084.

It is an arithmetic number, because the mean of its divisors is an integer number (1055182500).

Almost surely, 2^10551001665 is an apocalyptic number.

10551001665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10551001665 is a deficient number, since it is larger than the sum of its proper divisors (6331918335).

10551001665 is a wasteful number, since it uses less digits than its factorization.

10551001665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54896.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 10551001665 in words is "ten billion, five hundred fifty-one million, one thousand, six hundred sixty-five".