1551711383203 has 2 divisors, whose sum is σ = 1551711383204. Its totient is φ = 1551711383202.

The previous prime is 1551711383177. The next prime is 1551711383219. The reversal of 1551711383203 is 3023831171551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551711383203 - 2⁵ = 1551711383171 is a prime.

It is a super-3 number, since 3×1551711383203³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1551711383263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775855691601 + 775855691602.

It is an arithmetic number, because the mean of its divisors is an integer number (775855691602).

Almost surely, 2^{1551711383203} is an apocalyptic number.

1551711383203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551711383203 is an equidigital number, since it uses as much as digits as its factorization.

1551711383203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 1551711383203 in words is "one trillion, five hundred fifty-one billion, seven hundred eleven million, three hundred eighty-three thousand, two hundred three".