11815537357703 has 2 divisors, whose sum is σ = 11815537357704. Its totient is φ = 11815537357702.

The previous prime is 11815537357699. The next prime is 11815537357711. The reversal of 11815537357703 is 30775373551811.

11815537357703 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11815537357703 - 2² = 11815537357699 is a prime.

It is a super-5 number, since 5×11815537357703⁵ (a number of 67 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11815537357753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5907768678851 + 5907768678852.

It is an arithmetic number, because the mean of its divisors is an integer number (5907768678852).

Almost surely, 2^{11815537357703} is an apocalyptic number.

11815537357703 is a deficient number, since it is larger than the sum of its proper divisors (1).

11815537357703 is an equidigital number, since it uses as much as digits as its factorization.

11815537357703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9261000, while the sum is 56.

The spelling of 11815537357703 in words is "eleven trillion, eight hundred fifteen billion, five hundred thirty-seven million, three hundred fifty-seven thousand, seven hundred three".