10203009915551 has 2 divisors, whose sum is σ = 10203009915552. Its totient is φ = 10203009915550.

The previous prime is 10203009915529. The next prime is 10203009915563. The reversal of 10203009915551 is 15551990030201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10203009915551 - 2¹⁰ = 10203009914527 is a prime.

It is a super-2 number, since 2×10203009915551² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10203009915499 and 10203009915508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203009915521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101504957775 + 5101504957776.

It is an arithmetic number, because the mean of its divisors is an integer number (5101504957776).

Almost surely, 2^{10203009915551} is an apocalyptic number.

10203009915551 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203009915551 is an equidigital number, since it uses as much as digits as its factorization.

10203009915551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60750, while the sum is 41.

Adding to 10203009915551 its reverse (15551990030201), we get a palindrome (25754999945752).

The spelling of 10203009915551 in words is "ten trillion, two hundred three billion, nine million, nine hundred fifteen thousand, five hundred fifty-one".