1010330205551 has 4 divisors (see below), whose sum is σ = 1029393039672. Its totient is φ = 991267371432.

The previous prime is 1010330205541. The next prime is 1010330205581. The reversal of 1010330205551 is 1555020330101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010330205551 is a prime.

It is a super-2 number, since 2×1010330205551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1010330205551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010330205541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9531416981 + ... + 9531417086.

It is an arithmetic number, because the mean of its divisors is an integer number (257348259918).

Almost surely, 2^{1010330205551} is an apocalyptic number.

1010330205551 is a deficient number, since it is larger than the sum of its proper divisors (19062834121).

1010330205551 is an equidigital number, since it uses as much as digits as its factorization.

1010330205551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19062834120.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 1010330205551 its reverse (1555020330101), we get a palindrome (2565350535652).

The spelling of 1010330205551 in words is "one trillion, ten billion, three hundred thirty million, two hundred five thousand, five hundred fifty-one".