10203543551 has 6 divisors (see below), whose sum is σ = 10349284656. Its totient is φ = 10059826700.

The previous prime is 10203543523. The next prime is 10203543619. The reversal of 10203543551 is 15534530201.

It is a de Polignac number, because none of the positive numbers 2^k-10203543551 is a prime.

It is a super-2 number, since 2×10203543551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203540551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1007015 + ... + 1017096.

It is an arithmetic number, because the mean of its divisors is an integer number (1724880776).

Almost surely, 2^10203543551 is an apocalyptic number.

10203543551 is a deficient number, since it is larger than the sum of its proper divisors (145741105).

10203543551 is an frugal number, since it uses more digits than its factorization.

10203543551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024253 (or 2024182 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 10203543551 in words is "ten billion, two hundred three million, five hundred forty-three thousand, five hundred fifty-one".