55103637634387 has 2 divisors, whose sum is σ = 55103637634388. Its totient is φ = 55103637634386.

The previous prime is 55103637634369. The next prime is 55103637634391. The reversal of 55103637634387 is 78343673630155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55103637634387 - 2⁷ = 55103637634259 is a prime.

It is not a weakly prime, because it can be changed into another prime (55103637634327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27551818817193 + 27551818817194.

It is an arithmetic number, because the mean of its divisors is an integer number (27551818817194).

Almost surely, 2^{55103637634387} is an apocalyptic number.

55103637634387 is a deficient number, since it is larger than the sum of its proper divisors (1).

55103637634387 is an equidigital number, since it uses as much as digits as its factorization.

55103637634387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 114307200, while the sum is 61.

The spelling of 55103637634387 in words is "fifty-five trillion, one hundred three billion, six hundred thirty-seven million, six hundred thirty-four thousand, three hundred eighty-seven".